8th Grade Final Exam Practice Test
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.
- 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
Questions: 10 | Attempts: 180684 | Last updated: Mar 22, 2022
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