WorksheetsScience
Total questions: 13
Worksheet time: 7mins
Name
Class
Date
1.
What type of reaction is FeS + FeS + 2 HCl → FeCl2 + H2S
a)
physical
b)
chemical
c)
synthesis
d)
replace
2.
Chemistry is
a)
is a branch of physical science that studies the composition, structure, properties and change of matter.
b)
is a branch of physical science that studies the composition structure properties and change of matter
c)
the study if matter and how matter changes
3.
Anything that takes up space and has mass is considered
a)
Mass
b)
Density
c)
Matter
d)
Volume
4.
What happens when chemical bonds break and new bonds form?
a)
as a result of these processes that a reaction is overall exothermic (energy is given out to the surroundigs) or overall endothermic (energy is absorbed from the surroundings).
b)
it gives of energy
5.
The substances listed on the left side of a chemical equation are the
a)
reactant
b)
product
6.
CaCO3 represents a
a)
reactant
b)
product
7.
What does the principle of the conservation of mass state?
a)
That in a chemical reaction the total mass of the reactants must equal the total mass of the products
b)
no
8.
A chemical equation that shows the same number of each kind of atom on both sides of the equation is said to be ___________.
a)
a balanced equation
b)
unbalanced equation
9.
A chemical reaction that absorbs energy in the form of heat is described as
a)
exothermic reaction
b)
endothermic reaction
10.
A rapid reaction between oxygen and fuel is known as
a)
a cubustion
b)
b
11.
The production of gas when an eggshell is add to a sample of vinegar is considered to be a ____________.
a)
physical
b)
chemical
12.
In the chemical equation below, MgCl2 and H2 are called the ______?
a)
product
b)
reactant
13.
In the chemcial equation below, 2Mg and HCl are called the
a)
reactant
b)
product
100 %
