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Science 8: Unit 2 Practice Part 1

Total questions: 113

Worksheet time: 2hrs 53mins

Name
Class
Date
1.

Gas to liquid is

a)

Condensation

b)

sublimation

c)

deposition

d)

evaporation

2.

Solid to Gas is

a)

condensation

b)

sublimation

c)

evaporation

d)

deposition

3.

Liquid to solid is

a)

freezing

b)

Melting

c)

Boiling

d)

Steaming

4.

Liquid to a Gas is

a)

Melting

b)

evaporation

c)

condensation

d)

sublimation

5.

How close together particles are is called?

a)

Mass

b)

Weight

c)

Vibrate

d)

Density

6.

How much space particles take up is called?

a)

Density

b)

Volume

c)

Mass

d)

Weight

7.

To change from one state of matter to another state of matter is called?

a)

phase change

b)

potential change

c)

kinetic change

d)

thermal change

8.

Heat is also called?

a)

Thermal Energy

b)

Potential Energy

c)

Kinetic Energy

d)

Light Energy

9.

To shake or wiggle in place is called?

a)

constant

b)

fixed

c)

vibrate

d)

immobile

10.

Mass is _______________.

a)

how much matter is in a object

b)

a measurement

c)

how had gravity pulls on an object

d)

how much volume is in an object

11.

Weight is ____________.

a)

How much matter is an object

b)

How hard gravity pulls on an object

c)

How much mass is in an object

d)

How much volume is in an object

12.

Boiling is....

a)

liquid rapidly changes to a gas

b)

solid rapidly changes to a gas

c)

gas rapidly changes to a liquid

d)

solid rapidly changes to a liquid

13.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
14.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
15.

Freezing

a)

Solid to gas

b)

Liquid to solid

c)

Gas to solid

16.

Boiling

a)

liquid to gas

b)

gas to solid

c)

gas to liquid

17.
Which state of matter has a definite shape?
a)
solid
b)
liquid
c)
gas
18.

What is happening when my ice cream changes from a solid to a liquid?

a)

freezing

b)

melting

c)

burning

19.

The state of matter that has no definite size or shape is

a)

Solid

b)

Liquid

c)

Gas

20.

Particles in a ______________________ move quickly and are far apart.

a)

gas

b)

solid

c)

liquid

21.

Particles of a liquid

a)

are tightly packed together and stay in a fixed position.

b)

are free to move around one another but still touch.

22.

The slower the particles in a substance move,

a)

the colder it is.

b)

the warmer it is.

c)

the more energy it has.

23.
The temperature of a substance increases as___.
a)
the substance expands
b)
the average kinetic energy of its particles increases
c)
the substance's volume increases
d)
the substance's mass increases
24.

Definite shape and definite volume

a)

Solid

b)

Liquid

c)

Gas

25.

The properties of liquids include (SELECT ALL THAT APPLY)

a)

definite volume

b)

take the shape of the container

c)

can flow

d)

are relatively incompressible

e)

can diffuse and have surfacre tension

26.

According to the Kinetic Molecular Theory a liquid's (SELECT ALL THAT APPLY)

a)

particles are held close together by intermolecular forces

b)

particles are in constant motion

c)

particles are vibrating in place and closely packed

d)

particles are not moving

27.

Is more energy required melt or to boil the same amount of water?

a)

Boiling requires more energy

b)

melting requires more energy

c)

it takes the same amount of energy to melt water or to boil water

28.

Water is "sticky" because...

a)

of cohesion.

b)

of adhesion.

c)

of the attraction between the positively charged hydrogen atoms and the negatively charged oxygen atom.

d)

of capillary action.

29.
What is the only natural substance on Earth found in the liquid, solid, and gas states?
a)
water
b)
oxygen
c)
hydrogen
d)
metal
30.

Why does ice float on liquid water?

a)

Ice does not float on liquid water.

b)

It has a higher density than liquid water.

c)

It floats because it has lower density than liquid water.

d)

adhesion and cohesion

31.

Which of the following is not a physical property of gases?

a)

absence of definite volume

b)

large density

c)

high compressibility

d)

fluidity

32.

Which states of matter are fluid?

a)

gases and liquids

b)

liquids and solids

c)

gases only

d)

liquids only

33.

The pressure exerted by a gas does not depend on

a)

temperature.

b)

volume.

c)

number of moles present.

d)

the identity of the gas.

34.

For a fixed amount of gas at a constant temperature, the volume increases as the pressure...

a)

remains steady.

b)

increases.

c)

decreases.

d)

fluctuates.

35.

Which temperature scale cannot have negative numbers

a)

Fahrenheit

b)

Celsius

c)

Kelvin

d)

Degrees

36.

Phase of matter where particles are held in place by intermolecular forces

a)

Plasma

b)

Solid

c)

Liquid

d)

Gas

37.

Phase of matter where particles move around each other while being slightly attracted to each other through intermolecular forces

a)

Plasma

b)

Solid

c)

Liquid

d)

Gas

38.

Phase of matter where particles have enough kinetic energy to break intermolecular forces and spread apart greatly

a)

Plasma

b)

Solid

c)

Liquid

d)

Gas

39.

A space entirely devoid of matter is called:

a)

A Black Hole

b)

A Vacuum

c)

Outer Space

d)

Pressure

40.

Pressure is caused by:

a)

Gas molecules colliding with surfaces

b)

Gas molecules reacting with each other

c)

Gas molecules colliding with each other

d)

Gravity

41.

In this phase of matter, particles do NOT stop moving. Instead they vibrate in place

a)

Plasma

b)

Solid

c)

Liquid

d)

Gas

42.
Which scientist developed the atomic theory?
a)
JJ Thomson
b)
Ernest Rutherford
c)
John Dalton
d)
James Chadwick
43.
Electron cloud is based on
a)
Quantum Mechanics
b)
Gold Foil Experiment
c)
Matter is made up of small particles called atoms
d)
Nuclear Theory
44.
He developed the planetary model of the atom.
a)
Rutherford
b)
Bohr
c)
Chadwick
d)
Dalton
45.
James Chadwick discovered the ________.
a)
proton
b)
neutron
c)
electron
d)
nucleus
46.
What did Thomson discover?
a)
electron
b)
proton
c)
neutron
d)
electron cloud
47.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

48.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
49.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
50.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
51.
Where electrons are likely to be found as they travel around the nucleus
a)
Nucleus
b)
Electron Cloud
c)
Within a Proton
d)
Within a Neutron
52.
The scientist responsible for "discovering" the nucleus is:
a)
Bohr
b)
Rutherford
c)
Schroedinger
d)
Einstein
53.

John Dalton stated:

a)

Atoms are tiny, invisible particles.

b)

Atoms of one element are all the same.

c)

Atoms of different elements are different.

d)

Compounds form by combining atoms.

e)

All of the statements listed.

54.
Measure mainly of the nuclear particles: protons + neutrons
a)
Subatomic Particles
b)
Atomic Number
c)
Atomic Mass
d)
Gluons
55.
The smallest particle of an element that shows all the properties of that element.
a)
Subatomic Particles
b)
Atom
c)
Quarks
d)
Gluons
56.

_____________ is the study of matter and how matter changes.

a)

Chemistry

b)

Paleontology

57.

Atoms are made of 3 _________________ particles.

a)

Subterranean

b)

Subatomic

58.

What is the basic particle that makes up an element?

a)

Atom

b)

Cell

59.

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

a)

Flammability

b)

Density

c)

Mass

d)

Volume

60.

Which of the following is not true about a pool of water and a piece of ice

a)

They have different chemical properties

b)

They have the same composition

c)

They have different states of matter

d)

They have different physical properties.

61.

The ability of iron to rust is a(n) ________ property.

a)

Chemical

b)

Physical

62.

The physical property that makes metal pots good for cooking is ______.

a)

heat conductivity

b)

flexibility

c)

electrical conductivity

d)

flammability

63.

Which of the following is true about matter?

a)

It has mass and takes up space

b)

It is a solid that takes up space

c)

It has mass and is usually a liquid

d)

It is always a substance

64.

A substance can be classified by its _____ properties, which are properties that can be observed without changing it into another substance.

a)

Physical

b)

Chemical

65.

Characteristics used to describe matter are called _________.

a)

Both physical and chemical properties

b)

Physical properties

c)

Chemical Properties

d)

Neither physical and chemical properties

66.

Solid, liquid, and gas are the 3 ____ of matter.

a)

States

b)

Laws

c)

Facts

d)

Substances

67.
Substances that CANNOT be broken down chemically into other substances are
a)
elements.
b)
compounds.
c)
mixtures.
d)
solutions.
68.
Which of these statements is false?
a)
Oxygen and copper are examples of elements.
b)
Elements are pure substances.
c)
Atoms of different elements can combine to form compounds.
d)
Atoms of different elements are the same.
69.

A(n) ______________________ is a single kind of matter that has a specific composition.

a)

homogenous mixture

b)

compound

c)

state

d)

heterogenous mixture

70.

A(n) ______________________ is a kind of matter that has more than one specific composition within it.

a)

homogenous mixture

b)

compound

c)

state

d)

heterogenous mixture

71.
Any time chemicals, heat, loose particles, or glassware are used, all students will wear _______________.  There will be no exceptions to this rule.
a)
gloves
b)
long-sleeve shirts
c)
all safety equipment available
d)
laboratory goggles
72.
The following symbol is for ...
a)
Biohazardous materials
b)
Compressed gas
c)
Oxidizing material
d)
Dangerously reactive material
73.

What does WHMIS stand for ?

a)

Workplace hazardous materials information system

b)

walking ham matter information system

c)

work help math information system

d)

welch hungry materials in snacks

e)

information helping hands matter system

74.

What does HHPS stand for?

a)

Household Housing Product Sytem

b)

Hazardous Household Product Symbols

c)

High Height Product System

d)

Hazardous Household Product System

75.

What does this HHPS picture mean?

a)

Corrosive

b)

Explosive

c)

Inflammable

d)

Poison

76.

What does this HHPS picture mean?

a)

Corrosive

b)

Explosive

c)

Flammable

d)

Poison

77.

What safety Symbol is this?

a)

Flamable

b)

Oxidizing

c)

No Open Flame

d)

Explosion

78.

The following symbol is for ...

a)

Biohazardous materials

b)

Compressed gas

c)

Corrosion

d)

Dangerously reactive material

79.

The following symbol is for ...

a)

materials causing immediate and serious toxic effects

b)

oxidizing material

c)

corrosive material

d)

environment hazard

80.

The following symbol would be found on household products that are poisonous.

a)

True

b)

False

81.
What does this GHS symbol means?
a)
Radioactive
b)
Carcinogenicity/ Aspiration Hazard
c)
Acute Toxicity
d)
Explosive
82.
Which of these symbols means: Explosion or reactivity hazard?
a)
Top right
b)
Top left
c)
Bottom right
d)
Bottom left
83.
Which symbol means 'causes less serious health effects or damages the ozone'?
a)
Top right
b)
Top left
c)
Bottom right
d)
Bottom left
84.

In HHPS, what do the three shapes mean?

a)

Aware, Caution, Danger

b)

Danger, Aware, Warning

c)

Caution, Warning, Violent

d)

Caution, Warning, Danger

85.

What does this WHMIS picture mean?

a)

Poisonous and Infectious Material: Other toxic effects

b)

Poisonous and Infectious Material: Biohazardous Infectious

c)

Corrosive Material

d)

Dangerously Reactive

86.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
87.
A chemical reaction is balanced when
a)
both sides have the same elements
b)
Both sides have the same  number of atoms
c)
Same subscripts
d)
Same coefficients
88.
Which of these is not a chemical reaction?
a)
Burning of wood
b)
Milk going bad
c)
Mixing vinegar and baking soda
d)
Melting of ice
89.
The coefficient in  3H2O is
a)
6
b)
2
c)
3
d)
5
90.
A precipitate is a 
a)
liquid that forms when two solids are reacted
b)
a solid that forms when two liquids are mixed
c)
a gas that forms when vinegar and baking soda react
d)
a change of color in a solution
91.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
92.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
93.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
94.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
95.
Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?
a)
200 g
b)
700 g
c)
1,100 g
96.
Properties that describe how a substance looks, feels, state of matter, etc. are?
a)
Chemical properties
b)
Physical properties
97.
Properties that describe how a substance reacts with other substances are called?
a)
Chemical properties
b)
Physical properties
98.
What does a chemical change result in?
a)
A phase change in the substance (ex. liquid to solid)
b)
A change in texture of the substance.
c)
A change in the way atoms are bonded to each other.
d)
A change in the way atoms are arranged in space.
99.
Which of the following is an example of a physical change?
a)
Baking a birthday cake
b)
A glass falling and shattering on the floor
c)
Burning a piece of paper
d)
Baking soda and vinegar mixing together
100.
Which type of change is most often easily reversed?
a)
Chemical
b)
Physical
c)
Both
101.
Identify what’s happening in the picture as a chemical or physical change.
a)
Chemical
b)
Physical
c)
Both
102.
Identify what’s happening in the picture as a chemical or physical change.
a)
Chemical
b)
Physical
c)
Both
103.
A statue damaged by acid rain is a chemical change.
a)
True
b)
False
104.
Why is the below picture an example of a physical change?
a)
The pencil can no longer be used.
b)
The pencil is a different size.
c)
The materials making up the pencil did not change.
d)
The materials making up the pencil are different.
105.
A baby gaining weight is an example of a _________ change.
a)
Chemical
b)
Physical
c)
Both
106.
When iron is exposed to water vapor and air, it rusts. This is an example of a ________ change.
a)
Chemical
b)
Physical
c)
Both
107.
Does the change from (a) to (b) represent a chemical or physical change?
a)
Chemical
b)
Physical
c)
Both
108.
Does the following represent a chemical or physical change?
a)
Chemical
b)
Physical
c)
Both
109.
Does the following represent a chemical or physical change?
a)
Chemical
b)
Physical
c)
Both
110.

A chemical change is when

a)

the chemical properties change

b)

the chemical properties do not change

c)

a change where the characteristics do not change the substance

111.

Which below are types of physical properties:

a)

density

b)

color change

c)

temperature

d)

mallelable

e)

solubility

112.

Which of the following are examples of chemical properties (more than one)

a)

combusts

b)

reacts with water and oxygen

c)

ductile

d)

is weighed in grams

e)

has a sour taste

113.

This is an example of a ________ change.

a)

physical

b)

chemical

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