Chapter 1 1/22-1/24 So Far

Question 1

What are Atoms?

Answer 1

The fundamental building blocks of matter

Question 2

Free Atoms?

Answer 2

Free atoms bind together in specific geometric arrangements to form molecules.

Question 3

How is a molecule form?

Answer 3

When two or more atoms join together.

Question 4

What are the 7 diatomic molecules?

Answer 4

H2, N2, F2, O2, I2, Cl2, Br2

Question 5

What is a compound?

Answer 5

A compound is a molecule that contains at least two different elements.

Question 6

All compounds ___ molecules, but ____ ____ molecules ___ compounds

Answer 6

Are, not all, are

Question 7

What is the scientific method?

Answer 7

A process for understanding nature by observing nature and its behavior, and by conducting experiments by testing our ideas.

Question 8

What is a qualitative observation?

Answer 8

Noting or describing HOW a process happens.

Question 9

What is a quantitative observation?

Answer 9

Measuring or quantifying something about the process.

Question 10

Laws describe how _____ behaves

Answer 10

Nature

Question 11

What is the atomic theory?

Answer 11

Matter is composed of small, tiny, indestructible particles called atoms

Question 12

What are the three states of matter?

Answer 12

Solid, liquid, and Gas

Question 13

Solids have a _____ volume and a ______ shape

Answer 13

Fixed, Fixed

Question 14

Liquids have a _____ volume but an __________ shape

Answer 14

Fixed, indefinite

Question 15

Gases have an _______ volume and ________ shape

Answer 15

Indefinite, indefinite

Question 16

What is a pure substance?

Answer 16

made up of only one component and its composition is invariant

Question 17

Elements:

Answer 17

A substance that cannot be broken down into simpler substances

Question 18

Compound:

Answer 18

2 or more different elements joined together by a chemical bond.

Question 19

What are mixtures?

Answer 19

A substance composed of two or more components in proportions that can vary from one sample to another.

Question 20

Heterogeneous:

Answer 20

Made up of multiple substances whose presence can be seen

Question 21

Homogeneous:

Answer 21

Made up of multiple substances but appears to be one substance.
Same composition + properties

Question 22

3 ways to separate mixtures

Decanting-

Answer 22

Carefully pouring off water into another container

Question 23

3 ways to separate mixtures

Distillation-

Answer 23

Boiling off the more volatile liquid.

Question 24

3 ways to separate mixtures

Filtration-

Answer 24

Mixture is poured through a filter paper or pourous substance

Question 25

Extensive Property-

Answer 25

Depends upon the amount of substance present

Question 26

Intensive property-

Answer 26

Does not depend on the amount of substance