Matter Ch.1 Study Guide

Question 1

What is Law of Conversion

Answer 1

Weighing Substances before and after chemical change. What ever you start with is conserved.

Question 2

What is Matter?

Answer 2

Anything with mass and volume

Question 3

Give an everyday example of law of conversion

Answer 3

Electricity conductivity

Question 4

Give on chemical reaction that law of conversion illitraites.

Answer 4

melting point + boiling point

Question 5

Describe the differances of solids liquids and gas.

Answer 5

Solid is ridgy, liquid is a in compressible fluid, and gas is a compressible fluid.

Question 6

What are the 3 states of matter?

Answer 6

Solid, liquid, gas

Question 7

Give an example of each state

Answer 7

Solid=Ice
Liquid=water
Gas=steam

Question 8

What is a physical property?

Answer 8

A characteristic of a substance that can be observed or measured without changing the identity of the substance.

Question 9

Give 3 examples of a physical property

Answer 9

Density, Hardness, melting point and boiling point.

Question 10

What is a chemical property?

Answer 10

A specific characteristic of a substance like an element or a compound relating to how much it can change as a result to a reaction.

Question 11

Give 3 examples of a chemical property.

Answer 11

Flammability, toxicity, and acidity.

Question 12

What is a physical change?

Answer 12

When the shape, size, or state of the matter changes, but the substance is still essentially the same.

Question 13

Give 2 examples of a physical change

Answer 13

Melting and Freezing

Question 14

What is a chemical change?

Answer 14

A change of materials into another new material with different properties and one or more that one new substances are formed.

Question 15

Give 2 examples of a chemical change.

Answer 15

Burning or rusting

Question 16

Describe the difference between a pure and impure substance.

Answer 16

Pure substances are composed of a single type of atom or molecule. Impure substances are made of different types of atoms and molecules.

Question 17

What are elements?

Answer 17

A simple substance that can not be broken down into smaller parts or change into another substance.

Question 18

Give 3 examples of an element

Answer 18

Oxygen, helium, sodium

Question 19

Define Endothermic

Answer 19

Needs or gains energy from its surroundings. The temperature of something will drop.

Question 20

Define extothermic

Answer 20

Loses energy due to its surroundings. The temperature will rise.

Question 21

What are compounds?

Answer 21

A substance made up of 2 or more different chemical elements combined in a fixed ratio.

Question 22

Give 3 examples of a compound

Answer 22

Sugar, Salt, Water

Question 23

What is a mixture?

Answer 23

A combination of 2 or more substances in any proportions.

Question 24

Describe the difference between heterogeneous and homogeneous mixtures.

Answer 24

A homogeneous mixture is a mixture in which the components that make up the mixture but not evenly dissolved through the mixture.

Question 25

What is an intensive property?

Answer 25

A property of matter that depends only on the type of matter in a sample and not on the amount.

Question 26

Give 2 examples of an intensive property.

Answer 26

Temperature and pressure.

Question 27

What is a extensive property?

Answer 27

A property that depends on the amount of matter in a sample.

Question 28

Give 2 examples of an extensive property.

Answer 28

Mass and Volume

Question 29

Define chromatography

Answer 29

A physical method of separation that distributes components in two phases. One being stationary and the other moving in one direction. Based on separation due to particle size.

Question 30

What are 3 different types of chromatography?

Answer 30

Gas, Thin-layer, and paper.

Question 31

What are 4 clues that a chemical reaction happened?

Answer 31

1. Formation of gas
2. Formation of solid
3. Transfer of energy in the form of heat and/or light (not always 100%)
4. Change in color