chemistry

Question 1

Matter:

Answer 1

Has mass and takes up space

Question 2

Pure Substance:

Answer 2

Anything made of one chemical (H20)

Question 3

Mixture:

Answer 3

Physically combined but not chemically combined (you can separate it like saltwater)

Question 4

Element:

Answer 4

Made of one type of atom (H, He)

Question 5

Homogeneous mixture:

Answer 5

Everything is mixed in well (kool-aid)

Question 6

Heterogeneous mixture:

Answer 6

Everything isn’t fully mixed in (trail mix, cereal)

Question 7

Compound:

Answer 7

Matter made of two or more atoms made together (H20, NaCl)

Question 8

Is air a pure substance or a mixture?

Answer 8

Mixture

Question 9

Is air homogeneous, heterogeneous, an element, or a compound?

Answer 9

Homogeneous

Question 10

Is Copper (Cu) a pure substance or a mixture?

Answer 10

Pure substance

Question 11

Is Copper (Cu) homogeneous, heterogeneous, an element, or a compound?

Answer 11

Heterogeneous

Question 12

Is Copper Sulfide (CuS) a pure substance or a mixture?

Answer 12

Pure Substance

Question 13

Is Copper Sulfide (CuS) homogeneous, heterogeneous, an element, a compound, or a mixture?

Answer 13

A compound

Question 14

Is Trail Mix a pure substance or a mixture?

Answer 14

Mixture

Question 15

Is Trail Mix homogeneous, heterogeneous, an element, or a compound?

Answer 15

Heterogeneous

Question 16

Is Coffee a pure substance or a mixture?

Answer 16

Mixture

Question 17

Is Coffee homogeneous, heterogeneous, an element, or a compound?

Answer 17

Homogeneous

Question 18

Is Silver (Ag) an element or compound?

Answer 18

Element

Question 19

Is Sprite homogeneous or heterogeneous?

Answer 19

Homogeneous

Question 20

Is a Bacon Burger homogeneous or heterogeneous?

Answer 20

Heterogeneous

Question 21

Is Ammonia (NH3) an element or compound?

Answer 21

Compound

Question 22

Why is it possible to separate a mixture using a physical change, but not chemically?

Answer 22

Pure substances are CHEMICALLY bonded, so they cannot be separated physically

Question 23

How would you separate sand, salt, and water?

Answer 23

Us a funnel/filter paper to remove sand from the salt water, then boil the water to get the salt out

Question 24

What’s distillation?

Answer 24

Separation by different B,P.s

Question 25

What's chromatography?

Answer 25

Separation by solvents through paper

Question 26

How can a compound such, as water, be broken down into its element?

Answer 26

Chemical reactions may be used to SEPARATE them into their elements

Question 27

How are substances different from mixtures?

Answer 27

Substances: One chemical Mixture: Two or more chemicals

Question 28

If a rock is heavy, is that a physical property or a chemical property?

Answer 28

Physical

Question 29

If the penny has tarnished, is that a physical property or a chemical property?

Answer 29

Chemical

Question 30

If the water's density is 1.0 g/ml, is that a physical property or a chemical property?

Answer 30

Physical

Question 31

If the milk has expired, is that a physical property or a chemical property?

Answer 31

Chemical

Question 32

If a boat is sinking, is that a physical property or a chemical property?

Answer 32

Physical

Question 33

If water freezes at 0 degrees, is that a physical property or a chemical property?

Answer 33

Physical

Question 34

If iron rusts when exposed to moisture, is that a physical property or a chemical property?

Answer 34

Chemical

Question 35

If acid burns, is that a physical change or a chemical change?

Answer 35

Chemical

Question 36

If you tear paper, is that a physical change or a chemical change?

Answer 36

Physical

Question 37

If baking soda & vinegar form bubbles when added together, is that a physical change or a chemical change?

Answer 37

Chemical

Question 38

If salt dissolves in water, is that a physical change or a chemical change?

Answer 38

Physical

Question 39

If you're chewing gum, is that a physical change or a chemical change?

Answer 39

Physical

Question 40

If a nail is rusting, is that a physical change or a chemical change?

Answer 40

Chemical

Question 41

If you burn a candle, is that a physical change or a chemical change?

Answer 41

Chemical

Question 42

A solid has a fixed _____ and _____

Answer 42

Volume and shape

Question 43

TOF: Solids vibrate in place

Answer 43

True

Question 44

Does a liquid have a fixed volume?

Answer 44

Yes

Question 45

TOF: Liquids do not take the shape of a container

Answer 45

False

Question 46

What state of matter has a definite shape and volume?

Answer 46

A solid

Question 47

What does D=m/v mean?

Answer 47

Density equals mass divided by volume

Question 48

What do you times by to get the volume of something?

Answer 48

Length x width x height

Question 49

What do you do if you're trying to find the mass of something?

Answer 49

Density x volume

Question 50

What do you do if you're trying to find the density of something?

Answer 50

Mass/Volume

Question 51

What do you do if you're trying to find the volume of something?

Answer 51

Mass/Density

Question 52

What are some examples of common materials that are dense?

Answer 52

Rock, Iron, Zinc, Copper, etc

Question 53

What are some examples of common materials that are not dense?

Answer 53

Air, Styrofoam, etc

Question 54

Describe volume displacement

Answer 54

Add an object to water to see volume change, measure L x W x H

Question 55

How can density be used to determine the identity of a material?

Answer 55

All objects have the same density at room temp