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Craig Open Sci Ed 7.1

Total questions: 66

Worksheet time: 53mins

Name
Class
Date
1.

What is a substance?

a)

Made of multiple types of materials

b)

Made of one type of material throughout

c)

Made of two types of materials

d)

Made of no materials

2.

What does it mean to dissolve?

a)

When a solid becomes a liquid and mixes completely

b)

When a liquid becomes a solid

c)

When a gas becomes a liquid

d)

When a solid remains unchanged

3.

What does the term "soluble" describe?

a)

A material that can dissolve in a substance

b)

A material that cannot dissolve in a substance

c)

A material that evaporates quickly

d)

A material that is magnetic

4.

What does the term "insoluble" describe?

a)

A material that can dissolve in a substance

b)

A material that can NOT dissolve in a substance

c)

A material that evaporates quickly

d)

A material that changes color in a substance

5.

What is a mixture?

a)

A single pure substance

b)

A blend of 2 or more substances

c)

A chemical reaction

d)

A type of element

6.

In which state of matter are the particles least able to move?

a)

A

b)

B

c)

C

7.

Which of these three states represents a liquid?

a)

A

b)

B

c)

C

8.

Which of these three states would you expect to be the most affected by the volume of its container?

a)

A

b)

B

c)

C

9.

Using one or more of your senses to gather information

a)

observing

b)

inferring

c)

predicting

d)

classifying

10.

Creating representations of complex objects or processes

a)

making models

b)

evaluating

c)

classifying

d)

inferring

11.

When matter is heated what happens to the motion of the particles within the matter?

a)

The particles move faster

b)

The particles move slower

c)

Heat does not affect the motion of the particles

12.

When matter is cooled what happens to the motion of the particles within the matter?

a)

The particles will slow down

b)

The particles will speed up

c)

Cooling will not affect the motion of the particles

13.

What is the phase change from gas to liquid?

a)

condensation

b)

vaporization

c)

melting

d)

freezing

14.

What is the phase change from liquid to gas?

a)

vaporization

b)

condensation

c)

melting

d)

freezing

15.

Critical Thinking! If gas particles in a tire are moving slowly, your tire pressure will drop because the gas particles are not pressing against the walls of the tire. What temperature change do you think would cause this pressure drop?

a)

The temperature will have become colder

b)

The temperature will have become hotter

c)

Temperature and pressure have no relation

16.

What 2 types of matter are pure substances?

a)

elements and compounds

b)

elements and mixtures

c)

mixtures and compounds

d)

atoms and elements

17.

Which form of matter is represented by single argon atoms?

a)

Element

b)

Compound

c)

Mixture

d)

Colloid

18.

Which form of matter is represented in the image?

a)

element

b)

compound

c)

mixture

d)

solution

19.

Which form of matter is represented by the joined carbon and oxygen atoms?

a)

element

b)

compound

c)

mixture

d)

colloid

20.

The atoms of different elements can join together to form

a)

elements

b)

compounds

c)

mixtures

21.

Which property describes the measure of mass divided by volume?

a)

Corrosive

b)

Density

c)

Melting point

d)

Solubility

22.

Which property describes how easily a substance can dissolve?

a)

Toxic

b)

pH

c)

Solubility

d)

Ductile

23.

Which property describes the temperature at which a substance will melt?

a)

Luster

b)

Oxidizer

c)

Melting point

d)

Flammable

24.

Which property describes the temperature at which a substance will vaporize?

a)

Boiling point

b)

Hardness

c)

Explosive

d)

Corrosive

25.

Which of the following is a chemical property?

a)

Flammable

b)

Conductive

c)

Malleable

d)

Luster

26.

Which property describes how easily a substance reacts when exposed to an open flame?

a)

Toxic

b)

Explosive

c)

Radioactive

d)

Flammable

27.

Which property describes a substance that can be poisonous or cause health effects?

a)

Boiling point

b)

Toxic

c)

Melting point

d)

Solubility

28.

"Brittle" means to...

a)

Break easily

b)

Become shiny

c)

Carry electricity

d)

Coat a metal in another metal

29.

Which physical properties stays the same

a)

Color

b)

Melting Point

c)

Boiling Point

30.

Which of the following is an example of a physical property?

a)

Reactivity with other chemicals

b)

Flammability

c)

Toxicity

d)

Color

31.

What is a chemical reaction?

a)

A change in color, odor, or temperature

b)

A change in state from solid to liquid

c)

A process where new substances are formed

d)

A process where physical properties are altered

32.

Which State of matter has an indefinite volume and an indefinite shape?

a)

Gas

b)

Liquid

c)

Solid

d)

None

33.

Which State of matter has a definite volume and an indefinite shape?

a)

Gas

b)

Liquid

c)

Solid

d)

None

34.

Which has more energy: Gas particles or Solid Particles?

a)

Gas

b)

Solid

35.

Which has less energy: Liquid particles or Solid Particles?

a)

liquid

b)

Solid

36.

Match the following solid, liquid, or gas with the correct arrangement of particles.

a)

1.

Gas

b)

2.

Liquid

c)

3.

Solid

37.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
38.

Which box has a higher density?

a)

A

b)

B

c)

They are the same

39.
Helium balloons rise on earth because
a)
helium is less dense than air
b)
helium is more dense than air
c)
helium is cooler than air
d)
helium is warmer than air
40.
Look at this image.  Which object has the LOWEST density in water? How? 
a)
The Ping Pong Ball because it floats to the top 
b)
The bolt because it has sunk to the bottom
c)
The soda cap because it is not just full of air like the Ping Pong ball
41.
What two types of measurements make up DENSITY? 
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
42.

Which of the following is the correct definition of density?

a)

The amount of stuff in an object

b)

The amount of space an object takes up

c)

A measure of the force of gravity on an object

d)

The amount of matter (mass) packed into a space (object)

43.

Which object has the lowest density in this picture?

a)

A

b)

B

c)

C

44.

You calculated the density of an unknown substance to be 5.7g/cm3. According to the chart, which of the substances do you most likely have?

a)

Aluminum

b)

Iron

c)

Tin

d)

Zinc

45.

Which of the following substances would float in water? (Hint: water has a density of 1g/cm3)

a)

gold

b)

rubber

c)

water

d)

cork

46.
I have two objects with the same volume but different masses.  Which object will be more dense?
a)
The object with less weight.
b)
The object with more weight.
c)
The object with more mass.
d)
The object with less mass.
47.

 Indicates the ease with which a material can ignite and the intensity with which it burns once it catches on fire.

a)

Malleability

b)

Solute

c)

Solubility

d)

Flammability

48.
Describe a solute.
a)
part of solution present in largest amount
b)
gets dissolved
c)
water
d)
surrounds and breaks apart
49.

It is an ability of liquid to resist flowing.

a)

capillarity

b)

fluidity

c)

surface tension

d)

viscosity

50.
What is viscosity?
a)
A liquid's resistance to flow.
b)
a liquids flow.
c)
a liquid
d)
gas to solid.
51.
When a solid reaches the temperatures of its ___, it can become a liquid.
a)
melting point
b)
freezing point
c)
boiling point
d)
density
52.
When a liquid reaches the temperatures of its ___, it can become a gas.
a)
melting point
b)
freezing point
c)
boiling point
d)
density
53.
The freezing and melting points of water are the same.
a)
True
b)
False
54.
To determine the freezing and melting points use a 
a)
thermometer
b)
scale
c)
balance
55.
The temperature when a solid changes to a liquid - 
a)
melting point
b)
freezing point
c)
boiling point
56.
What is happening at the boiling point?
a)
liquid to gas
b)
gas to liquid
c)
solid to liquid
d)
liquid to solid
57.
What is happening at freezing point?
a)
gas to liquid
b)
solid to liquid
c)
liquid to solid
d)
liquid to gas
58.
When does condensation happen?
a)
solid to liquid
b)
liquid to gas
c)
gas to liquid
d)
solid to gas
59.
What is happening at water melting point?
a)
liquid to gas
b)
solid to liquid
c)
gas to liquid
d)
liquid to soild
60.
When does evaporation happen?
a)
gas to liquid
b)
liquid to solid
c)
solid to liquid
d)
liquid to gas
61.

Which picture matches the formula C3H8O?

(black = carbon, red = oxygen, white = hydrogen)

a)

A

b)

B

c)

C

d)

D

62.

Which formula matches this molecule?

(white = hydrogen, blue = nitrogen, yellow = fluorine)

a)

A

b)

B

c)

C

d)

D

63.

Which of the following accurately describes the chemical formula of the molecule shown above?

a)

3CH8O

b)

C3H7O

c)

C4H8O2

d)

C3H8O

64.

Based on the diagram of molecule 5, what is the identity of the compound?

a)

Hydrogen peroxide (H2O2)

b)

Hydronium (H3O+)

c)

Hydroxide (OH-)

d)

Water (H2O)

65.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
66.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3

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