Chapter 2 Test Study Guide

Question 1

If a material contains three elements joined in a fixed proportion, it is a what?

Answer 1

Compound

Question 2

A substance has a melting point of 0 celsius and a boiling point of 100 celsius. The substance is most likely what?

Answer 2

Water

Question 3

Which of the following is a heterogeneous mixture?

Answer 3

A jar of mixed nuts

Question 4

Which of the following has the highest viscosity?

Answer 4

Corn Syrup

Question 5

Which of the following is a mixture?

Answer 5

Sand

Question 6

A mixture that appears to contain only one substance is a what?

Answer 6

A homogeneous Mixture

Question 7

What physical properties of nylon and leather make them good materials to use for shoe laces?

Answer 7

Durability and Flexibility

Question 8

A substance that is made up of only one kind of atom is a _____

Answer 8

Element

Question 9

Give examples of things that are malleable

Answer 9

Aluminium .. Gold.. Silver

Question 10

A material that is malleable and conducts electricity is most likely what type of material?

Answer 10

A metal

Question 11

What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter?

Answer 11

Distillation

Question 12

Flammability is a materials ability to burn in the presence of what?

Answer 12

Oxygen

Question 13

What is the symbol for gold?

Answer 13

AU

Question 14

A mixture can be classified as a solution, suspension, or colloid based on what?

Answer 14

The size of the largest particles

Question 15

What is the symbol for aluminum

Answer 15

AL

Question 16

What are the clues that a chemical change has occurred?

Answer 16

Production of gas……Formation of precipitate…distinct change in color.

Question 17

The following are pure substances?

Answer 17

Compounds

Question 18

Give examples of a pure substance

Answer 18

Water; Oxygen

Question 19

If an unknown substance cannot be broken down into simpler substances, it is a ____ and is made only of____ kind of Atom

Answer 19

Element; one

Question 20

Which of the following is a clue of chemical change?

Answer 20

A gas forms when vinegar and baking soda are mixed

Question 21

You are about to open a container of soy milk but notice that there is our instructions to shake well before serving the soy milk is most likely a ______.

Answer 21

Suspension

Question 22

Why is water a compound?

Answer 22

1. Can be broken down into simpler substances

2. always has to hydrogen Atoms for each one oxygen aton

Question 23

Filtration can be used to separate mixtures based on which characteristics?

Answer 23

The size of their particles

Question 24

When a physical change in a sample occurs, what can change in their sample?

Answer 24

shape.. Mass.. Volume

Question 25

What type of material is used for making molds because it has a low melting point?

Answer 25

Wax

Question 26

Rust forms because iron and oxygen are highly ______ elements.

Answer 26

Reactive

Question 27

If I spoon gets hot quickly when it is used to stir a pot of soup, is probably made of _____.

Answer 27

Metal

Question 28

Material used for electrical wiring would need to have good____.

Answer 28

Conductivity

Question 29

A cake rises as it bakes because a chemical change causes _______ to be produced.

Answer 29

Carbon Dioxide

Question 30

______ is a process that could be used to separate dissolved particles from the liquid in a solution

Answer 30

Distillation

Question 31

Matter that always has exactly the same composition is classified as a ______.

Answer 31

Pure Substance

Question 32

A solid that forms and separates from a liquid mixture is a____.

Answer 32

Precipitate

Question 33

A ______ change occurs when a material changes shape or size but composition of the material does not change

Answer 33

Physical

Question 34

The substance in a ______ mixture are evenly distributed throughout the mixture

Answer 34

Homogeneous

Question 35

The symbols for elements either have____ or____ letters

Answer 35

One; two

Question 36

Is mixture C Homogeneous or heterogeneous?

Answer 36

Heterogeneous because it can be filtrated and it can be scattered by light

Question 37

What are the characteristics of a mixture?

Answer 37

They have varying properties

Question 38

Which of the the mixtures in figure 2-2 is a colloid?

Answer 38

A; Scatters light, and cant be separated by filtration or layers

Question 39

Which of the mixtures is a solution?

Answer 39

Doesn't scatter by light, doesn't separate into layers, or cant be filtrated.

Question 40

Rank the mixtures

Answer 40

B.A.C