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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
Metal
C
Gas
D
Liquid
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 kinetic energy remains the same
B
In the morning
C
In the afternoon
D
The ball has no kinetic energy
3) Which statement about solid matter is true?
A
Atoms in the solid phase have enough kinetic energy to completely separate
B
Atoms of most substances are slightly closer together in the soid than the liquid phase
C
Atoms of a substance have greater kinetic energy in the solid than the gas phase
D
Atoms of a substance in the solid phase take the shape of the container holding the solid
4) Which statement about matter in the gas phase is true?
A
Atoms of a substance move more freely in the liquid than the gas phase
B
Atoms in the gas phase have enough kinetic energy to separate completely
C
Atoms of a gas are locked together in a rigid structure and cannot flow
D
Atoms of a substance in the gas phase cannot be compressed into smaller spaces
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 liquid are locked together in a rigid structure and cannot flow
C
Atoms of a substance in the liquid phase can be compressed into a smaller volume
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
Solid ice
B
Cool water
C
Melting ice
D
Warm water
7) How does the average kinetic energy of the particles making up ice change after ice melts?
A
Kinetic energy decreases
B
Kinetic energy randomly changes
C
Kinetic energy does not change
D
Kinetic energy increases
8) Compare the average kinetic energy of particles in ice to those in liquid water
A
The kinetic energy cannot be compared
B
The kinetic enegy is equal
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 particles will have the same charge
B
The Lithium and Chloride ions will repel each other
C
These ions will neither attract nor repel each other
D
The Lithium and Chloride ions will be attracted to each other
10) Which statement about the structure of an atom is true?
A
Neutrons are NOT found in the atomic nucleus
B
Protons and electrons are roughly equal in mass
C
An electron cloud surrounds each atom
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 particle is 100 times more massive than the other
B
The particles are equal in volume
C
The particles have opposite electrical charges
D
The particles have the same electrical charges
12) Sulfur has 16 protons, 16 neutrons, and an atomic mass of 32. How many electrons does it have?
A
16
B
8
C
48
D
32
13) Oxygen has 8 protons, 8 electrons, and an atomic mass of 16. How many neutrons does it have?
A
4
B
12
C
8
D
16
14) Aluminum has 13 electrons, 14 neutrons, and an atomic mass of 27. How many protons does it have?
A
13
B
41
C
27
D
14
15) What is the atomic mass of Silicon?
A
14
B
70
C
28
D
42
*select an answer for all questions
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