Chemistry 102 Flashcards Preview

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Flashcards in Chemistry 102 Deck (18):
1

Define Theory

a unifying principle that explains a body of facts and/or those laws that are based on them

2

Define Chemistry

the study of matter and the changes it undergoes

3

Define Matter

anything that occupies space and has mass

4

Define Force

the push/pull on an object

5

What are the four fundamental forces?

1. gravity
2. electromagnetic force
3. weak nuclear force
4. strong nuclear force

6

What are the two classifications of matter?

1. mixtures
2. substances

7

Define Mixture

a combination of two or more substances in which the substances retain their distinct identities

8

Define Substance

matter that has a definite or constant composition and distinct properties

9

Define Homogeneous Mixtures

mixtures in which the composition of the mixture is the same throughout (aka a solution)

10

Define Heterogeneous Mixtures

mixtures in which the composition of the mixture is not uniform throughout

11

Define Compound

a substance composed of two or more elements chemically united in fixed proportions

12

Define Element

a substance that cannot be separated into simpler substances by chemical means

13

What is a physical property?

a property that can be observed without changing the matter (ex. length & mass)

14

What is a chemical property?

a property that can be observed ONLY through a change in the matter (ex. flammability & ionization)

15

What is an intensive property?

a property that does not depend on the amount of the substance (ex. boiling point & melting point)

16

What is an extensive property?

a property that depends of the amount of the substance (ex. mass & volume)

17

What is a macroscopic property?

a property of bulk (something you can measure in the real world like length or mass)

18

What is a microscopic property?

a property of the particle world (something measured indirectly like mass of atoms or conductivity)