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Worksheets24-25_S8P1 Unit 1 Matter Test
Total questions: 63
Worksheet time: 32mins
Name
Class
Date
1.
Which of the following is an example of a pure substance?
a)
Saltwater
b)
Iron
c)
Salad
d)
Soil
2.
What best describes a compound?
a)
Contains only one type of atom
b)
Made of two or more elements chemically combined
c)
A heterogeneous mixture
d)
Easily separated by filtration
3.
Which option describes a mixture?
a)
Always has a uniform composition
b)
Contains only metals
c)
Can be physically separated
d)
Is always chemically combined
4.
Which of these is a homogeneous mixture?
a)
Trail mix
b)
Pizza
c)
Milk
d)
Water
5.
Which of the following is a heterogeneous mixture?
a)
Air
b)
Sugar water
c)
Orange juice with pulp
d)
Vinegar
6.
In a mixture, each substance:
a)
Loses its chemical properties
b)
Gains new properties
c)
Maintains its original properties
d)
Becomes a pure substance
7.
An element:
a)
Can be broken down into simpler substances
b)
Is a type of homogeneous mixture
c)
Has only one type of atom
d)
Contains at least two different atoms
8.
Which of these is a compound?
a)
Oxygen
b)
Salt
c)
Iron
d)
Air
9.
Which process separates components of a homogeneous mixture, like salt water?
a)
Filtration
b)
Combustion
c)
Melting
d)
Evaporation/Vaporization
10.
Elements and compounds are both:
a)
Pure substances
b)
Mixtures
c)
Solutions
d)
Suspensions
11.
Which statement about mixtures is true?
a)
They are always homogeneous
b)
They are chemically combined
c)
They can be separated physically
d)
They are elements
12.
Particles in a solid:
a)
Are spread far apart
b)
Move quickly
c)
Are tightly packed
d)
Have a lot of energy
13.
Which state of matter has particles with the most energy?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
14.
When a liquid becomes a solid, the particles:
a)
Move faster
b)
Lose energy
c)
Spread further apart
d)
Gain energy
15.
In which state of matter are particles moving the fastest?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
16.
When a gas cools to become a liquid, it:
a)
Gains energy
b)
Loses energy
c)
Becomes more spread out
d)
Becomes a solid
17.
Which best describes particles in a gas?
a)
Closely packed
b)
Moving freely at high speed
c)
Vibrating in place
d)
Only found in containers
18.
Adding thermal energy to a solid generally causes it to:
a)
Freeze
b)
Expand
c)
Contract
d)
Stay the same
19.
When a solid changes to a liquid, what happens to the particle speed?
a)
It decreases
b)
It increases
c)
It stops completely
d)
It stays the same
20.
In which state are particles close together but can move past each other?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
21.
The process of a gas becoming a liquid is called:
a)
Melting
b)
Freezing
c)
Condensation
d)
Sublimation
22.
Which change requires an increase in energy?
a)
Freezing
b)
Melting
c)
Condensation
d)
Deposition
23.
Which property of matter is a chemical property?
a)
Color
b)
Melting point
c)
Reactivity
d)
Boiling point
24.
Which of the following describes a physical property of water?
a)
Flammability
b)
Reactivity
c)
Boiling point
d)
Ability to corrode metals
25.
A change in which property does NOT indicate a chemical change?
a)
Temperature
b)
Color
c)
State of matter
d)
Production of a gas
26.
Melting point is an example of a:
a)
Physical property
b)
Chemical property
c)
Reactivity
d)
Ability to rust
27.
Which of the following changes is a physical change?
a)
Rusting
b)
Burning
c)
Melting
d)
Reacting with acid
28.
The boiling point of water is an example of a:
a)
Physical property
b)
Chemical property
c)
Chemical change
d)
Chemical reaction
29.
Which of the following is a chemical change?
a)
Dissolving salt in water
b)
Burning wood
c)
Melting ice
d)
Boiling water
30.
Which term describes a property that can be observed without changing the identity of a substance?
a)
Chemical property
b)
Physical property
c)
Reactivity
d)
Flammability
31.
Which is an example of a chemical property?
a)
Density
b)
Color
c)
Melting point
d)
Ability to react with oxygen
32.
Which process indicates a chemical change?
a)
Dissolving
b)
Melting
c)
Rusting
d)
Evaporating
33.
Which of the following changes is physical?
a)
Burning
b)
Rusting
c)
Melting
d)
Decomposing
34.
Which observation indicates a chemical reaction?
a)
Evaporation
b)
Melting
c)
Production of gas
d)
Sublimation
35.
When a substance burns, it undergoes a:
a)
Physical change
b)
Chemical change
c)
Phase change
d)
Physical property
36.
What type of change is boiling water?
a)
Chemical change
b)
Physical change
c)
Decomposition
d)
Reaction
37.
Which of these is NOT a sign of a chemical change?
a)
Color change
b)
Gas production
c)
Temperature change
d)
Dissolving
38.
Which term describes a process where a solid turns directly into a gas?
a)
Condensation
b)
Deposition
c)
Sublimation
d)
Freezing
39.
What type of change is melting?
a)
Physical
b)
Chemical
c)
Endothermic
d)
Exothermic
40.
The process of a gas becoming a solid is known as:
a)
Sublimation
b)
Freezing
c)
Deposition
d)
Condensation
41.
When ice melts, it changes from a:
a)
Liquid to gas
b)
Gas to solid
c)
Solid to liquid
d)
Liquid to solid
42.
Which of these is NOT a physical change?
a)
Dissolving
b)
Melting
c)
Burning
d)
Freezing
43.
What is the smallest unit of an element that retains the properties of the element?
a)
Molecule
b)
Atom
c)
Compound
d)
Mixture
44.
Which particle is found in the nucleus of an atom?
a)
Electron
b)
Neutron
c)
Molecule
d)
Compound
45.
Which particle has a negative charge?
a)
Proton
b)
Electron
c)
Neutron
d)
Atom
46.
The center of an atom is called the:
a)
Electron
b)
Nucleus
c)
Molecule
d)
Shell
47.
Which term describes atoms of the same element with different numbers of neutrons?
a)
Ion
b)
Isotope
c)
Compound
d)
Molecule
48.
Which particle has no charge?
a)
Proton
b)
Electron
c)
Neutron
d)
Ion
49.
Which particle is positively charged?
a)
Proton
b)
Electron
c)
Neutron
d)
Molecule
50.
Which of these best describes a molecule?
a)
A charged particle
b)
A group of atoms bonded together
c)
The nucleus of an atom
d)
A single atom
51.
Which particle determines which kind of element an atom is?
a)
Electron
b)
Neutron
c)
Proton
d)
Nucleus
52.
Which is true about electrons?
a)
They are found in the nucleus
b)
They have a negative charge
c)
They are positively charged
d)
They have no mass
53.
Where are the valence electrons located?
a)
Outer shell
b)
Inner shell
c)
Seashell
d)
Nucleus
54.
In a chemical reaction, the starting substances are called:
a)
Products
b)
Reactants
c)
Catalysts
d)
Enzymes
55.
The rate of a chemical reaction can be increased by:
a)
Lowering temperature
b)
Adding an inhibitor
c)
Increasing temperature
d)
Adding water
56.
What law states that matter is not created or destroyed in a chemical reaction?
a)
Law of Conservation of Mass
b)
Law of Conservation of Energy
c)
Newton's First Law
d)
Law of Inertia
57.
In a closed system, the mass before a chemical reaction compared to after is:
a)
Less
b)
More
c)
The same
d)
Depends on the temperature
58.
The Law of Conservation of Mass means that:
a)
Mass changes during reactions
b)
Mass stays the same in reactions
c)
Mass is created in reactions
d)
Mass is destroyed in reactions
59.
When wood burns, the mass of the products compared to the reactants is:
a)
Less
b)
More
c)
Equal
d)
Created
60.
If 10 grams of reactants form products, the total mass of the products is:
a)
Less than 10 grams
b)
More than 10 grams
c)
10 grams
d)
5 grams
61.
Which of these illustrates the Law of Conservation of Mass?
a)
Mass increases
b)
Mass decreases
c)
Mass stays the same
d)
Mass turns into energy
62.
Which substance is formed from chemical bonding of two or more elements?
a)
Element
b)
Mixture
c)
Solution
d)
Compound
63.
The smallest unit of a compound that retains all properties is a(n):
a)
Atom
b)
Mixture
c)
Molecule
d)
Element
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