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First Semester 8th Grade Science Pretest

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Last updated 25 days ago
23 questions
Required
1
S8P1b
Required
1
S8P2a
Required
1
S8P1d
Required
1
S8P1a
Required
1
S8P1d
Required
1
S8P1e
Required
1
S8P1e
Required
1
S8P1d
Required
1
S8P2b
Required
1
S8P3b
Required
1
S8P2d
Required
1
S8P2b
Required
1
S8P2b
Required
1
S8P2c
Required
1
S8P2c
Required
1
S8P1c
Required
1
S8P2d
Required
1
S8P1e
Required
1
S8P2d
Required
1
S8P2d
Required
1
S8P1f
Required
1
S8P1f
Required
1
S8P2c
Question 1
1.

Look at the models of particles in different states.
Part A: Which model shows the structure and movement of particles in a gas?

Question 2
2.

Using the models in the diagram, answer the question.


If you added an extreme amount of thermal energy to a gas, which model in the diagram would reflect the behavior change of the particles?

Question 3
3.

Question 4
4.

Look at the diagrams below of Atoms A and B. Then look at the potential results when you put them together. Select and match the letter of the choice that BEST describes each of the potential results.

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homogeneous mixture
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heterogeneous mixture
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Question 5
5.

Question 6
6.

Question 7
7.

Which of the following BEST explains why the correct answer to the second part of Part A was the right choice?

Question 8
8.

Select the correct answers describing signs that a chemical reaction might have taken place.

  • There is a change in energy.
  • There is a change in odor.
  • There is a change in color.
  • There is uniformity in composition and appearance.
Question 9
9.

Davis is comparing the strength of elastic energy of three rubber bands of different sizes. Of the following choices, which one would be the BEST way for him to prove the relative elastic energy of each rubber band?

Question 10
10.

In scientific terms, which of the following BEST summarizes the purpose of a runaway truck ramp?

Question 11
11.

Look at the following diagram about heat transfer methods.

Janie is trying to argue how conduction and convection interact in the formation of a convection current. Which of the four arguments below would be BEST for her to model her own argument after?

Question 12
12.

Look at the picture of the rollercoaster ride below.

Assuming the train car is moving downhill, which of the following statements is MOST accurate about the train car in the moment captured above?

Question 13
13.

Look at the picture of the rollercoaster ride below.

Assuming the train car is moving right to left across your page, which of the following statements is MOST accurate about the train car in the moment captured above?

Question 14
14.

Look at the image of argon, beryllium, and nitrogen atoms above. The atom of which element shown in the image, if any, would MOST LIKELY lose electrons?

Question 15
15.

Look at the image of argon, beryllium, and nitrogen atoms above. Which of the following statements BEST explains why the answer to Part A is the best choice?

Question 16
16.

Question 17
17.

Question 18
18.

Look at the image of the atom. Select the correct terms that describe each part of the atom and match it to the number of the corresponding box from the picture.

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4
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electron orbitals
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Question 19
19.

Jesse is planning an investigation to explore the different types of energy. She wants to investigate radiant energy first.
Part A: Which of the following investigations and corresponding observations will provide Jesse proof of the power of radiant energy?

Question 20
20.

Part B: Use your answer from the previous question. Which of the following BEST explains why the correct answer to part A was the right choice?

Question 21
21.

Part A: Which of the following choices correctly balances the following chemical equations?
S8 + F2 --> SF6

Question 22
22.

Use the previous question. Part B: The chemical equation you just balanced proves the validity of the

Question 23
23.

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model 1
Look at the following diagram of ice being put into a cup of water below.

The process of ice turning to water is a _________ and is an example of __________.
chemical change only
physical change only
evaporation
physical and chemical change
melting
freezing
compound
Which TWO of the following COULD be indicators of either a chemical or physical change?
the ability to separate a mixture
a change in color
the formation of a precipitate
a release of energy
the formation of a gas
an absorption of energy
Look at the Periodic Table of Elements shown below.
Part A: Choose the correct answer from the choices beneath each blank. The far-right column group on the Periodic Table above are known as the __________, and they are notable for being extremely __________.
rare on Earth
reactive
noble gases
metalloids
alkali metals
unreactive
You have a new substance that you can separate physically.
You have a substance in which a solid has dissolved into a liquid.
There is a change in form.
A precipitate forms.
Signs a Chemical Reaction Might Have Taken Place
A runaway truck ramp is designed to maximize a truck's potential energy by stopping the truck on the crest of a hill.
The train car has reached its maximum kinetic energy.
The train car has reached its maximum kinetic energy.
Terrence is trying to determine thephysical properties of a substance. Select the correct answer(s) that describe the traits that show the physical properties of a substance.
melting point
dissolvability
combustibility
density
reactivity
boiling point
flammability
Choose the correct answers from the choices. A heat transfer occurs when heat, also known as _________________, moves from one substance or body to another. An example of a heat transfer that doesn't require the substances or bodies to physically touch is _______________.
convection
radiation
mechanical energy
thermal energy
chemical energy
conduction
2
nucleus
5
proton
1
electron
3
neutron
Investigation: On a sunny day, Jaime puts a plastic bowl wrapped in aluminum foil and full of water on the black concrete surface of the school parking lot. She comes back two hours later. Observation: One-third of the water has evaporated.
Investigation: Jaime heats water in a metal pot on a stove. She comes back two hours later. Observation: The water level has risen, with some of the water spilling onto the stovetop.
S8 + F2 --> 24S + F6
S8 + F2 --> 8SF6
Match the types of energy listed on the left to the examples of that energy at work listed on the right.
gravitational energy
wind blowing
sound energy
fire burning
radiant energy
lightning striking
thermal energy
gasoline powering a car
mechanical energy
lightning striking
chemical energy
thunder booming
electrical energy
skydiving