NEW
Font size
S
M
L
XL
WorksheetsChemical Reactions
Total questions: 23
Worksheet time: 12mins
Name
Class
Date
1.
What are Chemical Reactions?
a)
It's when you mix substances.
b)
a process in which atoms rearrange to form new substances
c)
When something bubbles.
d)
letter and numbers showing the types and number of atoms
2.
What was the brown substance in the water in Westfield?
a)
Pipe substance
b)
Fertilizer
c)
Rust
d)
Oxygen
3.
A structure that is formed by repeating groups of atoms linked together is
a)
molecule
b)
atom
c)
repeating group
d)
extended structure
4.
An ending substance that is made during a chemical reaction is called
a)
Reactant
b)
Product
c)
Atom
d)
Molecule
5.
The tiny pieces that all matter is made of is called
a)
electrons
b)
molecules
c)
super electrons
d)
atoms
6.
The temperature at which a substance changes from the liquid phase to the gas phase is the
a)
melting point
b)
boiling point
c)
freezing point
d)
point of no return
7.
The starting substances of a chemical reaction is called
a)
products
b)
substances
c)
reactants
8.
The number of atoms on one side of a chemical equation is equal to
a)
a molecule of a substance
b)
the amount of gas released during a chemical reaction
c)
the number of atoms on the other side of a chemical equation
d)
all of the matter that exists in the universe
9.
The arrow in a chemical reaction is known as
a)
yield/produce
b)
mixture
c)
energy
d)
equals
10.
Evidence(s) that a chemical reaction occurred is(are)
a)
Change in color
b)
change in state of matter
c)
change in temperature
d)
all are correct
11.
Something that is made of all the same atoms or groups of atoms is known as a
a)
substance
b)
model
c)
property
d)
chemical reaction
12.
Something that can be observed about a substance, such as color, smell, or boiling point is
a)
model
b)
reactant
c)
property
d)
product
13.
The relative size of things is the
a)
atom
b)
substance
c)
scale
d)
model
14.
A substance that is added to soil to help plants grow is the
a)
molecule
b)
fertilizer
c)
rust
d)
product
15.
Something that is able to cause damage to another substance is said to be
a)
a fertilizer
b)
an atom
c)
corrosive
d)
the boiling point
16.
The temperature at which a substance changes from the solid phase to the liquid phase is
a)
the freezing point
b)
the boiling point
c)
the melting point
d)
point of no return
17.
An object, diagram, computer program that helps understand something by making it easy to see
a)
fertilizer
b)
model
c)
molecule
d)
atom
18.
To change the order or position of something
a)
chemical reaction
b)
rearrange
c)
extended structure
d)
model
19.
This states that Matter can neither be created nor destroyed.
a)
Law of Conservation of Matter
b)
Law of Gravity
c)
Law of Inertia
d)
Law of Conservation of Energy
20.
The scientist who did experiments and developed the Law of Conservation of Matter was
a)
Sir Isaac Newton
b)
Galileo Gallilei
c)
Niels Bohr
d)
Antoine Lavoisier
21.
Does this chemical equation follow the Law of Conservation of Matter?
a)
Yes
b)
No
c)
I don't know
d)
Maybe
22.
In this chemical equation, which is one of the products?
a)
CO2
b)
C3H8
c)
O2
d)
None are correct
23.
In this chemical equation, which is one of the reactants?
a)
H2O
b)
CO2
c)
O2
d)
All are correct
Reset
