Chapter 1

Question 1

Chemistry

Answer 1

the scientific study of the compostion, structure, and properties of matter and changes that matter ungoes

Question 2

Matter

Answer 2

Anything that has mass and takes up space

Question 3

Mass
vs.
Weight

Answer 3

Mass: A measure of the amount of matter in an object
Weight: A measure of gravitational force exerted on an object, its value can change with location of the object in the universe

Question 4

Element
vs Compound

Answer 4

Element: A substance that cannot be seperated or broken down into simpler substances by chemical means; all atoms have the same atomic number
Compound: A substance made up of atoms of two or more different elements joined by chemical bonds

Question 5

Extensive property
vs
Intensive property

Answer 5

Extensive Prop: A property that depends on the extent or size of a system
Intensive Prop: A property that does not depend on the amount of matter present, such as pressure, temperature, density

Question 6

Physical change
vs
Chemical change

Answer 6

Physical change: A change of matter from one form to another without a change in chemical properties
Chemical change: A change that occurs when one or more substances change into entirely new substances with different properties

Question 7

Product
vs
Reactant

Answer 7

Prooduct: A substance that forms in a chemical reaction
Reactant: A substance or molecule that participates in a chemical reaction

Question 8

Physical property
vs
Chemical property

Answer 8

**Physical property: ** A characterisitc of a substance that does not involve a chemical change, such as density, color, hardness
**Chemical property: **A property of matter that describes a substance’s ability to participate in chemical reactions

Question 9

Mixture

Answer 9

A combination of two or more substances that are not chemically combined

Question 10

Solution

Answer 10

A homogenous mixture of two or more substances uniformly