8th Grade Final Exam Practice Test

30 Questions | By Plasso | Last updated: May 29, 2019 | Total Attempts: 146

Questions

Settings

Some people have a hard time in chemistry class, especially when it comes to equations and naming elements in a reaction. Are you an 8th grader preparing for your end of year exam? If so, then the practice test below is exactly what you need to get the high grade you desire. Give it a shot and all the best in the finals.

Questions and Answers

1.

Select 2 terms to describe this diagram.
- A.
  
  Element
- B.
  
  Compound
- C.
  
  Single atoms
- D.
  
  Molecule
2.

Choose 2 terms to describe this diagram
- A.
  
  Element
- B.
  
  Compound
- C.
  
  Single atoms
- D.
  
  Molecule
3.

Select 2 terms to describe this diagram
- A.
  
  Element
- B.
  
  Compound
- C.
  
  Single atoms
- D.
  
  Molecule
4.

Which diagram correctly shows the molecule according to the formula given?
- A.
  
  Option 1
- B.
  
  Option 2
- C.
  
  Option 3
- D.
  
  Option 4
5.

Which of the following formulas correctly describes the molecule in the diagram?
- A.
  
  CaCO3
- B.
  
  CaCOOO
- C.
  
  CaCO5
- D.
  
  CaCO
6.

According to the diagram, which of the following are the reactants?
- A.
  
  H2O
- B.
  
  NH4+
- C.
  
  NH3
- D.
  
  OH-
7.

According to the diagram, which of the following are the products?
- A.
  
  H2O
- B.
  
  NH4+
- C.
  
  NH3
- D.
  
  OH-
8.

Does the equation in this diagram show a chemical reaction?
- A.
  
  Yes, because there's an arrow
- B.
  
  Yes, because the reactants are different from the products
- C.
  
  No, because the reactants had to break their chemical bonds
- D.
  
  No, because the reactants are different from the products
9.

According to this diagram, did a chemical reaction occur?
- A.
  
  Yes, because chemical bonds were broken and/or formed
- B.
  
  Yes, because chemical bonds were NOT broken and/or formed
- C.
  
  No, because chemical bonds were broken and/or formed
- D.
  
  No, because chemical bonds were NOT broken and/or formed
10.

Does this diagram show a chemical reaction?
- A.
  
  Yes, because chemical bonds were broken and/or formed
- B.
  
  Yes, because chemical bonds were NOT broken and/or formed
- C.
  
  No, because chemical bonds were broken and/or formed
- D.
  
  No, because chemical bonds were NOT broken and/or formed
11.

Are these two liquids soluble or insoluble?
- A.
  
  Soluble because one is floating on top of the other
- B.
  
  Soluble because they are mixing
- C.
  
  Insoluble because they are not mixing
- D.
  
  Insoluble because they are able to dissolve
12.

Which of the following statements is true? Check all that apply
- A.
  
  Cotton is synthetic because you can see that it is grown on a farm
- B.
  
  Polyester is synthetic because you can see that it's made in a factory
- C.
  
  Polyester is synthetic because they use it to make jerseys
- D.
  
  Cotton is natural because it comes from a plant
13.

Which state of matter is this?
- A.
  
  Solid
- B.
  
  Liquid
- C.
  
  Gas
- D.
  
  None of the above
14.

Which state of matter is this?
- A.
  
  Solid
- B.
  
  Liquid
- C.
  
  Gas
- D.
  
  None of the above
15.

Which state of matter is this?
- A.
  
  Solid
- B.
  
  Liquid
- C.
  
  Gas
- D.
  
  None of the above
16.

Which statements correctly describes the relationship between temperature and the speed of atoms? Check all that apply
- A.
  
  As temperature increases, atoms move more slowly
- B.
  
  As temperature increases, atoms move more quickly
- C.
  
  As temperature decreases, atoms move more slowly
- D.
  
  There is no relationship between temperature and the speed of atoms
17.

Which of the following statements correctly describes the relationship between temperature and the volume of a substance?
- A.
  
  As temperature increases, volume increases
- B.
  
  As temperature increases, volume decreases
- C.
  
  As temperature decreases, volume increases
- D.
  
  There is no relationship between temperature and the volume of a substance
18.

Charles has a balloon full of helium. If Charles heats the helium inside of the balloon, which of the following things should happen?
- A.
  
  The atoms inside the balloon will get bigger, so the balloon will get bigger
- B.
  
  The atoms inside the balloon will spread out more, so the balloon will get bigger
- C.
  
  The helium will undergo a chemical reaction and the balloon will pop
- D.
  
  The atoms inside the balloon will slow down and the balloon will shrink
19.

Which of the following statements is shown in this diagram?
- A.
  
  In a chemical reaction, the mass of the reactants is equal to the mass of the products
- B.
  
  In a chemical reaction, the mass of the reactants is greater than the mass of the products
- C.
  
  In a chemical reaction, atoms are neither gained nor lost
- D.
  
  In a chemical reaction, atoms can be lost, but you can always get them back
20.

Which of the following statements about chemical reactions are FALSE? Check all that apply
- A.
  
  Chemical reactions always result in the formation of new substances
- B.
  
  In a chemical reaction, the physical properties of the products will be the same as those of the reactants
- C.
  
  In a chemical reaction, the physical properties of the products will be different from those of the reactants.
- D.
  
  Chemical reactions sometimes result in the formation of new substances.
21.

Which of the following physical properties can be used to identify a substance? Check all that apply.
- A.
  
  The melting point
- B.
  
  The boiling point
- C.
  
  The density
- D.
  
  The solubility
22.

This image shows that the majority of the iron shavings are collecting around the...
- A.
  
  Magnet
- B.
  
  Magnetic poles
- C.
  
  Magnetic axis
- D.
  
  Magnetic towers
23.

At which point does the roller coaster have the MOST gravitational potential energy?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  None of the above
24.

At which point does the roller coaster have the LEAST gravitational potential energy?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  None of the above
25.

During an exothermic reaction, temperature...
- A.
  
  Increases
- B.
  
  Decreases
- C.
  
  Stays the same
- D.
  
  Decreases, then increases

Related Topics

More 8th Grade Quizzes

Science Quiz For Class 8th Students

Hey buddy, if you are an 8th grader and looking for revision material for your science subject, then this quiz is designed for you and anyone else who wants to test their knowledge on the same. Give it a try, and remember to...

Questions: 10 | Attempts: 134887 | Last updated: Jul 8, 2021

Sample Question
Which type of star is the sun?

Supernova

Red giant

Red Supergiant

Hypernova

Quiz For Kids/Girls Aged 8-10 Years

As a child gets older, his/her ability to retain more knowledge also increases, and some even get smarter than some college students. How smart do you think you are for an 8-year-old? The quiz below is designed to see just how...

Questions: 12 | Attempts: 73723 | Last updated: Jul 15, 2021

Sample Question
Which of the following is a name for one of the Space Shuttles?

Cruiser

Voyager

Spacer

Visitor

Phasor

Atoms & Molecules Quiz: Atomic Theory - 8th Grade Science

Welcome to the Atoms & Molecules Quiz: Atomic Theory - 8th grade Science. Science is a fun subject to learn, and it gives us a clear picture of what goes on in the world today and the processes behind it. It may not look...

Questions: 15 | Attempts: 13788 | Last updated: Aug 22, 2021

Sample Question
Elements with atomic numbers higher than 92 are not natural but can be created by man or____________, by crashing nuclear particles into each other.

Pounded

Combined by radioactivity

Synthesized

A particle accelerator

Compounded