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SE #1 Review 1
Test Description: Semester exam review 8th grade
Instructions: Answer all questions to get your test result.
1) A substance has good conductivitiy, is malleable and is ductile. What type of substance is it?
A
Non-metal
B
Gas
C
Liquid
D
Metal
2) Do the air molecules in a ball have more kinetic energy when it is flat in the morning, or when it is more full in the afternoon?
A
The ball has no kinetic energy
B
The kinetic energy remains the same
C
In the morning
D
In the afternoon
3) Which statement about solid matter is true?
A
Atoms of a substance have greater kinetic energy in the solid than the gas phase
B
Atoms of a substance in the solid phase take the shape of the container holding the solid
C
Atoms of most substances are slightly closer together in the soid than the liquid phase
D
Atoms in the solid phase have enough kinetic energy to completely separate
4) Which statement about matter in the gas phase is true?
A
Atoms in the gas phase have enough kinetic energy to separate completely
B
Atoms of a substance in the gas phase cannot be compressed into smaller spaces
C
Atoms of a substance move more freely in the liquid than the gas phase
D
Atoms of a gas are locked together in a rigid structure and cannot flow
5) Which statement about liquid matter is true?
A
Atoms of a substance are closer together in the liquid than the gas phase
B
Atoms of a substance in the liquid phase can be compressed into a smaller volume
C
Atoms of a liquid are locked together in a rigid structure and cannot flow
D
Atoms of a liquid do not have enough kinetic energy to move around each other
6) Which of these substances is made up of particles which have the greatest average kinetic energy?
A
Cool water
B
Warm water
C
Melting ice
D
Solid ice
7) How does the average kinetic energy of the particles making up ice change after ice melts?
A
Kinetic energy decreases
B
Kinetic energy does not change
C
Kinetic energy increases
D
Kinetic energy randomly changes
8) Compare the average kinetic energy of particles in ice to those in liquid water
A
The kinetic enegy is equal
B
The kinetic energy cannot be compared
C
The kinetic energy is greater in liquid than ice
D
The kinetic energy is greater in ice than liquid
9) In a chemical reaction, an atom of Lithium loses an electron and an atom of Chlorine gains an electron. Which statement is true?
A
These ions will neither attract nor repel each other
B
The Lithium and Chloride ions will repel each other
C
These particles will have the same charge
D
The Lithium and Chloride ions will be attracted to each other
10) Which statement about the structure of an atom is true?
A
An electron cloud surrounds each atom
B
Neutrons are NOT found in the atomic nucleus
C
Protons and electrons are roughly equal in mass
D
A proton cloud surrounds each atom
11) Two particles move in opposite directions from each other. Which property of these particles could cause this to happen?
A
The particles have the same electrical charges
B
The particles have opposite electrical charges
C
The particle is 100 times more massive than the other
D
The particles are equal in volume
12) Sulfur has 16 protons, 16 neutrons, and an atomic mass of 32. How many electrons does it have?
A
48
B
16
C
32
D
8
13) Oxygen has 8 protons, 8 electrons, and an atomic mass of 16. How many neutrons does it have?
A
8
B
12
C
16
D
4
14) Aluminum has 13 electrons, 14 neutrons, and an atomic mass of 27. How many protons does it have?
A
41
B
13
C
27
D
14
15) What is the atomic mass of Silicon?
A
14
B
28
C
42
D
70
*select an answer for all questions
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