is chemistry notconcerned with exploring and inventing materials for use.​

Answers

Answer 1

Answer:

no it's part of chemistry to play thing exploring OR not.

Explanation:

Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.


Related Questions

Characteristics used to describe matter are you called

Answers

Physical properties are characteristics that describe matter. They include characteristics such as size, shape, color, and mass. These characteristics can be observed or measured without changing the identity of the matter in question.

Answer:

Physical properties

Explanation:

if the density of a bar of gold is 19.3g/cm^3and you cut it into four pieces , what is its density of each piece of gold

Answers

Density is an intrinsic property, so it is independent of the amount of substance present: one gold coin would have the same density as a solid gold boulder.

So if the density of gold is 19.3 g/cm³, the density of a bar of gold and the pieces into which the bar is cut would all be 19.3 g/cm³.

Considering the definition of density and intensive and extensive properties, the density of each piece of gold is 19.3 [tex]\frac{g}{cm^{3} }[/tex]

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space. In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

Intensive properties are those that will remain unchanged even though the amount of matter varies, while extensive properties vary depending on the amount of matter in a body.

Density is an intensive property, so it is independent of the sample size. This is because the solute will be present in a certain proportion with respect to the solvent. That ratio will not change unless more solute or more solvent is added. Consequently, the concentration remains constant (concentration is an intensive property) and density too.

Finally, the density of each piece of gold is 19.3 [tex]\frac{g}{cm^{3} }[/tex]

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If an element gives away an electron, will it form a positive ion or a negative
ion?

Answers

Answer:

posotive

Explanation:

electrons give off negative pulse so take one away

Mr. Stark thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Mr. Stark counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.

Identify the independent variable and dependent variable

Identify the control group and experimental group

Answers

Explanation:

taking a special juice independent variable

the number of stuck of paper dependent variable

the control group is group B

experimental group is Group A

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Plz help me complete this table

Answers

Answer:

9,19,9,10,9,F

15,29,14,15,14,Si

22,47,22,25,22,Ti

25,55,25,30,25,Mn

35,80,35,45,35,Br

8,16,8,8,8,O

47,108,47,61,47,Ag

16,32,16,16,16,S

82,207,82,125,82,Pb

Explanation:

Atomic number = number of protons = number of electrons

Mass number = number of protons + number of nuetrons

What properties of matter are the same for that substance no matter how much there is?

Answers

Answer:

physical properties

Explanation:

Intensive properties: A physical property that will be the same regardless of the amount of matter.

density:  ρ=mv  

color: The pigment or shade

conductivity: electricity to flow through the substance

malleability: if a substance can be flattened

luster: how shiny the substance looks

PLZ HELP WILL GIVE U BRANILEIEST

Answers

Answer:

I'm pretty sure it is C

Explanation:

because it has the same number of protons and neutrons

Who would most likely be required to work with sodium hydroxide?
a plumber
a gardener
a bricklayer
a mechanic

Need answer ASAP

Answers

Sodium hydroxide NaOH is proven to be an active agent for improving the mechanical properties of the bricks. Hence, bricklayer most likely need sodium hydroxide.

What is sodium hydroxide?

Sodium hydroxide is an ionic compound formed by the metallic sodium and  water. Sodium hydroxide has the chemical formula NaOH. It is a strong base and used as a reagent in many chemical synthesis which has to be carried in presence of a base.

Sodium hydroxide has an effect on the drying kinetics of bricks which are made with clay. Studies reported that the drying duration is linearly related with the concentration of NaOH.

Drying duration of bricks layers increases with increase in concentration of NaOH as well as the material porosity decreases. and hence the bricks will not show the visible cracks. Therefore, bricklayer need NaOH.

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Answer:

A) a plumber

Explanation:

A chemist forms 16.6 g of potassium iodide by combining 3.9 g of potassium with 12.7 g of iodine. Show that these results are consistent with the law of conservation of mass.

Answers

3.9 g + 12.7 g = 16.6 g

The sum of the masses of potassium and iodine equals the mass of the product, potassium iodide. The results are consistent with he law of conservation of mass.


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The law of conservation of mass states that mass can neither be created nor destroyed by chemical reactions or physical transformations.

The mass of potassium iodide can be calculated from the sum of the mass of potassium and iodine.

The mass of potassium iodide is as follows:-

[tex]Mass\ of \ potassium\ iodide=3.9\ g+12.7\ g\\=16.6\ g[/tex]

So, the total mass of potassium iodide is equal to the mass of potassium plus iodine. So, these results are consistent with the law of conservation of mass.

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Which phase change requires more heat energy, Heat of fusion or Heat of
vaporization? Explain in terms of particle arrangements.

Answers

Answer:

heat of fusion

Explanation:

heat of fusion is melting which requires more heat energy than heat of vaporization

Do cells in many-celled organisms all look the same or different? Explain.

Answers

Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialized functions.

Cells in many-celled organisms can look the same or different, depending on the type of organism and the function of the cells.

In general,multi-cellular(many-celled) organisms have specialized cells that perform specific functions, such as muscle cells, nerve cells, and blood cells. These cells are different in structure and function, but they all work together to maintain the organism's health and survival.

For example, in humans:

Muscle cells are long and cylindrical, while nerve cells are long and thin with many branches. Blood cells are smaller and come in several different types, such as red blood cells, which carry oxygen, and white blood cells, which fight infection.On the other hand, some cells in many-celled organisms look the same, such as skin cells, which are flat and thin, and line the surface of the skin.

Therefore, cells in many-celled organisms can look the same or different, depending on the function of the cells. While many-celled organisms have specialized cells, some cells have the same structure and function.

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Lisa's Chemistry class was performing an experiment with gas pressures. They filled a container with gas at a pressure of 101,000 Pa at room temperature. When they doubled the temperature, the pressure also doubled. What was the new pressure in scientific notation?

Answers

Answer:

2.02 × 10^5 Pa

Explanation:

According to this question, in an experiment, a container was filled with gas at pressure of 101,000 Pa, at room temperature. When this temperature was doubled, the pressure also increased by two times i.e.

The pressure changed to (101,000 Pa × 2) = 202,000 Pa

This question is asking to represent this in scientific notation. Scientific notation aims at representing a small or too large number in an easy way. It is done by making use of power of ten i.e. a × 10^b

Where; a = decimal number

b = power of ten

In the case of a large number like 202,000, the power of ten is derived by counting the decimal place backwards. If we are to count until we stop in front of the last digit, we will have 5 times.

That is; 2.02000 × 10^5

We can remove every trailing zeros

Hence, the answer is 2.02 × 10^5 Pa.

Which statement correctly describes the reactivity of noble gases, according to the octet rule?

Their atoms have one electron in their valence shells, so noble gases are very reactive.
Their atoms have eight electrons in their valence shells, so noble gases are very unreactive.
Their atoms have one electron in their valence shells, so noble gases are very unreactive.
Their atoms have eight electrons in their valence shells, so noble gases are very reactive.

Answers

Answer:


Their atoms have eight electrons in their valence shells, so noble gases are very unreactive.

In science class, Blaine’s teacher puts one glow stick in a cup of hot water and another glow stick in a cup of cold water. She asks the students to think about how the temperature of the water will affect the chemical reaction that occurs inside the glow stick once it is bent and starts to glow.
Which glow stick will be brighter once it is bent? Explain your answer.

Answers

Answer:

The glow stick in hot water will be brighter

Explanation:

The glow stick in hot water will be brighter than the glow stick in cold water because the heat from the hot water will cause the molecules in the glow stick to move faster. The faster the molecules move in the glow stick, the sooner and brighter the reaction will be. The cold water will cause molecules to move slowly and it will take longer for the reaction to occur, which will also make it less bright.

Answer:

The glow stick that was in the cup of hot water will be brighter once it is bent. The production of more light is evidence that the chemical reaction in the glow stick is happening faster. The reaction happens faster, because increasing the temperature increases the rate of a chemical reaction.

Explanation:

Just took assignment

I WILL GIVE YOU BRAINLIEST!!!

Answers

Answer:

The second option

Answer:

Intent to cause harm

It is MOST accurate to say that body mass index (BMI) provides information about __________.
A.
body composition
B.
an individual's height-weight ratio
C.
cardiorespiratory fitness levels
D.
an individual's height

Answers

It is most accurate to say that body mass index (BMI) provides information about an individual's height-weight ratio.

What is body mass index?

BMI takes into account natural variations in body shape, giving a healthy weight range for a particular height.

As well as measuring your BMI, healthcare professionals may take other factors into account when assessing if you're a healthy weight individual.

Muscle is much denser than fat, so very muscular people, such as heavyweight boxers, weight trainers and athletes, may be a healthy weight even though their BMI is classed as obese.

Your ethnic group can also affect your risk of some health conditions. For example, adults of South Asian origin may have a higher risk of some health problems, such as diabetes, with a BMI of 23, which is usually considered healthy.

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What is the smallest piece of an element?
O A. A speck
O B. A molecule
C. An atom
D. A crystal

Answers

Answer:

I think it's c (viewpoint)

..

Answer:

C. An atom

Explanation:

Which process changes matter from a gas to a liquid state?

Answers

Answer:

Condensation

Explanation:

Quick answer

Which thing has the greatest
mass and volume?
• a very large rock
• a big balloon
• a mud puddle
• a car

Answers

Answer:

either a car or a rock

Explanation:

because the rock can weigh more than the car , and vice-versa with the car weighing more than the rock

I'm just gonna clarify the other person's answer a big more. It is the rock. The rock is denser than the car, so that means it must have a larger mass, since density is mass divided by volume. And if it's large, it has a big volume as well

The smallest particle of any particular type of matter is known by which of the following terms?

Group of answer choices

Compound

Chemical

Element

Atom

Answers

I think the correct answer is d

honeybees are covered with tiny hairs. what function do you think the hairs perform as the bee travels from flower to flower​

Answers

Answer:

To pick up extra pollen while flying from flower to flower, also it helps to pollinate other flowers

Explanation:

If I’m wrong im sorry

Answer:

It carrys pollen from one flower to another.

Explanation:

When an extended structure is dissolved in water, it releases potassium (K) and chlorine (Cl) atoms in the
water
Which statement correctly describes the nature of this substance?
A.It is made of K and Cl atoms.
B.It is made of K molecules and Cl atoms.
C.It is made of K atoms and Cl molecules.
D.It is made of KCl molecules

Answers

Answer:

A.It is made of K and Cl atoms.

Explanation:

An atom is the smallest indivisible unit of an element while a molecule is the smallest particle of an element/compound that retains its chemical properties. However, the molecule is two or more atoms held together by means of a chemical bond e.g. Cl2 molecule consists of two atoms of Chlorine.

Hence, if an extended structure dissolves in water to release pottasium (K) and Chlorine (Cl) atoms, it means it is made up of K and Cl atoms. This is because the substance will dissociate l, in the presence of water, into it's simplest form which is the atomic level.

The Periodic Table is a chart of elements arranged in rows and columns according to their what

physical properties.
chemical properties.
name.
place of origin.

Answers

The answer for you is chemical properties

What is the name of the the following formula Cd(HOOCCOO)2

Answers

Answer:

I think that is called oxalic acid

Explanation:

A continental slope is the boundary between what to types of Earth's crust?
A Basalt and Sandstone
B Convergent and Divergent
C Continental and Oceanic
D Volcanic and Sedimentary

Answers

Answer:

c

Explanation:

I took the k12 test and got it right

A continental slope is a boundary between the Continental crust and Oceanic crust. Therefore, option (C) is correct.

What is a continental slope?

A continental slope can be described as the slope between the outer edge of the continental shelf and the deep ocean floor. The continental slope is defined as a cut by submarine canyons in many locations and marks the seaward edge of the continental shelf.

Continental slopes follow the boundary between continental and oceanic crust. The Continental slope has a steepness range from 1 to 25 degrees, the average is 4 degrees.

The continental margin lies between the continental shelf and the abyssal plain and comprises a continental slope that is surrounded by the flatter continental rise. It contains thick sediments deposited by currents from the shelf and slope.

The shelf generally ends at a point of increasing slope known as the shelf break and the sea floor under the break is the continental slope.

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Calculate the following expression and round your answer to the correct number of significant figures.
52.6cm x 1.214cm

Answers

Answer:

63.9 cm

Explanation:

A chemist prepares a solution of sodium carbonate by measuring out of sodium carbonate into a volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's sodium carbonate solution. Be sure your answer has the correct number of significant digits.

Answers

Answer:

The correct answer will be "[tex]9.45\times 10^{-5} \ mol/L[/tex]".

Explanation:

We have:

Moles of solute (Na₂Co₃) = [tex]18.9 \mu \ mol[/tex]

                                           = [tex]18.9\times 10^{-6}[/tex]

                               [tex]1 \mu \ mol[/tex] = [tex]10^{-6} \ mol[/tex]

Now,

The volume of the solution will be:

⇒  [tex]0.200 \ L[/tex]

∴ [tex]{1 \ mL=0.001 \ L}[/tex]

The formula to find the concentration will be:

⇒  [tex]Concentration = \frac{moles \ of \ solute \ (mol)}{Volume \ of \ solution \ (L)}[/tex]

On substituting the given values, we get

⇒                          [tex]=\frac{18.9\times 10^{-6}}{0.200}[/tex]

⇒                          [tex]=9.45\times 10^{-5} \ mol/L[/tex]

An atom of potassium has 19 protons and 20 neutrons. Its mass number is

Answers

Answer:

the mass no. is 39.0983 that is... 40

What does the chemical formula Cach, show about the compound it represents?
O It is made up of one element,
It is made up of two elements,
It is made up of three elements,
It is made up of four elements,

Answers

Answer: It is made up of one element

Answer: it is made up of 2 elements.

Explanation:

Ca and Cl are each there own element.

What is the chemical name for Se2CI

Answers

Answer: caesium oxide

Explanation:I think sorry if I’m wrong

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