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.
Element
Compound
Single atoms
Molecule
Element
Compound
Single atoms
Molecule
Element
Compound
Single atoms
Molecule
Option 1
Option 2
Option 3
Option 4
CaCO3
CaCOOO
CaCO5
CaCO
H2O
NH4+
NH3
OH-
H2O
NH4+
NH3
OH-
Yes, because there's an arrow
Yes, because the reactants are different from the products
No, because the reactants had to break their chemical bonds
No, because the reactants are different from the products
Yes, because chemical bonds were broken and/or formed
Yes, because chemical bonds were NOT broken and/or formed
No, because chemical bonds were broken and/or formed
No, because chemical bonds were NOT broken and/or formed
Yes, because chemical bonds were broken and/or formed
Yes, because chemical bonds were NOT broken and/or formed
No, because chemical bonds were broken and/or formed
No, because chemical bonds were NOT broken and/or formed
Soluble because one is floating on top of the other
Soluble because they are mixing
Insoluble because they are not mixing
Insoluble because they are able to dissolve
Cotton is synthetic because you can see that it is grown on a farm
Polyester is synthetic because you can see that it's made in a factory
Polyester is synthetic because they use it to make jerseys
Cotton is natural because it comes from a plant
Solid
Liquid
Gas
None of the above
Solid
Liquid
Gas
None of the above
Solid
Liquid
Gas
None of the above
As temperature increases, atoms move more slowly
As temperature increases, atoms move more quickly
As temperature decreases, atoms move more slowly
There is no relationship between temperature and the speed of atoms
As temperature increases, volume increases
As temperature increases, volume decreases
As temperature decreases, volume increases
There is no relationship between temperature and the volume of a substance
The atoms inside the balloon will get bigger, so the balloon will get bigger
The atoms inside the balloon will spread out more, so the balloon will get bigger
The helium will undergo a chemical reaction and the balloon will pop
The atoms inside the balloon will slow down and the balloon will shrink
In a chemical reaction, the mass of the reactants is equal to the mass of the products
In a chemical reaction, the mass of the reactants is greater than the mass of the products
In a chemical reaction, atoms are neither gained nor lost
In a chemical reaction, atoms can be lost, but you can always get them back
Chemical reactions always result in the formation of new substances
In a chemical reaction, the physical properties of the products will be the same as those of the reactants
In a chemical reaction, the physical properties of the products will be different from those of the reactants.
Chemical reactions sometimes result in the formation of new substances.
The melting point
The boiling point
The density
The solubility
Magnet
Magnetic poles
Magnetic axis
Magnetic towers
A
B
C
None of the above
A
B
C
None of the above
Increases
Decreases
Stays the same
Decreases, then increases