wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Making Lives Better Through Chemistry.

Total questions: 42

Worksheet time: 23mins

Name
Class
Date
1.

An electron is

a)

positively charged

b)

neutral

c)

negatively charged

2.

atomic number is

a)

the number of protons

b)

the number of electrons

c)

the number of neutrons

d)

the location of an atom on the periodic table

3.

Atomic Mass is the number of

a)

protons and neutrons in the nucleus of an atom

b)

protons and electrons in the nucleus of an atom

c)

neutrons and electrons in the nucleus of an atom

4.

An elements is

a)

a substance that cannot be split into simpler substances

b)

a substance that can be split into simpler substances

5.

A molecule is

a)

a singular particle of a particular element

b)

another name for an element

c)

2 or more atoms that are combined

6.

Signs of a chemical change include;

a)

change of colour, change of temperature, precipitate (solid) formed, gas released.

b)

change of colour, reversing back to original form, precipitate (solid) formed, gas released.

7.

Characteristics of metals on the periodic table are

a)

they are not able to be oxidised

b)

they are poor conductors of heat and electricity

c)

have free electrons

8.

The type of reaction that releases energy as heat is called

a)

endothermic

b)

exothermic

c)

respiration

d)

photosynthesis

9.

bases are the same as an acid

a)

true

b)

false

10.

To neutralise an acid you add a

a)

acid

b)

base

c)

Ph indicator

d)

equal amount of water

11.

protons

a)

negative charge, nucleus

b)

positive charge, shells

c)

positive charge , nucleus

d)

neutral charge, nucleus

12.

neutrons

a)

no charge, shells

b)

positive charge, nucleus

c)

neutral, no charge, nucleus

d)

negative charge, shells

13.

electrons

a)

no charge, nucleus

b)

positive charge, nucleus

c)

negative charge, shells

d)

negative charge, nucleus

14.

lst shell holds

a)

2

b)

8

c)

18

d)

32

15.

2nd shell holds

a)

2

b)

8

c)

18

d)

32

16.

3rd shell holds

a)

2

b)

8

c)

18

d)

32

17.

4th shell holds

a)

2

b)

8

c)

18

d)

32

18.

same number of protons, different number of neutrons

a)

atomic number

b)

mass number

c)

isotope

d)

ion

19.

a charged atom

a)

neutral

b)

isotope

c)

ion

d)

nucleus

20.
Angelina mixes 2 substances together in a beaker. The beaker becomes hot and the liquid changes color.
Did a chemical reaction occur?
a)
yes, because the properties changed and a new substance was made.
b)
no, because the properties did not change.
21.
Which of the following are NOT signs that a chemical reaction occured?
a)
the properties changed
b)
bubbles of gas formed
c)
color stays the same
d)
smells different
22.
Sandra was burning a vanilla candle. Was there a chemical reaction?
a)
no, because burning is never a chemical reaction.
b)
Yes, because the properties of the wick changed.
c)
yes, because heat was added.
d)
no, because the ash formed was a different substance.
23.
Which of the following is NOT a chemical reaction?
a)
burning a marshmallow in a campfire.
b)
a campfire
c)
acid rain turning a copper roof green.
d)
Dissolving red Koolaid in water.
24.
The characteristics or properties of metals include
a)
shiny and solid
b)
ductile and malleable
c)
lose electrons
d)
all of the above
25.
True or False - An energy level has to be full before moving on to the next energy level?
a)
true
b)
false
26.
Which particle does not contribute mass to the atom?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
27.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
28.
Water is an element?
a)
true
b)
false
29.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
30.
What is a pure substance that cannot be broken down into any other substance by physical or chemical means. Ex: Gold, Silver, Oxygen, & Nitrogen
a)
element
b)
compound
c)
mixture
d)
salad
31.
What type of mixture contains visible parts (like a salad or a pizza or granite)
a)
homogenous
b)
heterogenous
32.
What is matter
a)
Anything which is solid
b)
Anything that takes up space and has mass
c)
when something is wrong
33.
Gold is an example of a(n) 
a)
pure element
b)
pure compound
c)
pure mixture
34.
In a mixture items can be separated __________
a)
chemically
b)
physically
35.
Phase changes (going from a solid to a liquid to a gas) are what types of changes?
a)
chemical
b)
physical
36.
Elements in a compound can be separated __________
a)
physically
b)
chemically
37.
On the Periodic Table each element increases by one _________
a)
electron
b)
proton
c)
neutron
d)
letter
38.
who developed the modern day periodic table of elements?
a)
Darwin
b)
Shultz
c)
Hooke
d)
Mendeleev
39.
A row across the Periodic Table where each element has the same number of energy shells
a)
column
b)
family
c)
period
40.
In what type of bond are electrons gained or lost?  This happens between a metal and a non-metal?
a)
ionic
b)
covalent
c)
subatomic
41.
In this type of bond electrons are shared by two non-metals
a)
ionic
b)
covalent
c)
subatomic
42.
When heat is added to matter, the molecules tend to 
a)
move faster and farther apart
b)
slow down
c)
nothing, heat has no impact on the state of matter
d)
freeze

Similar Resources on Wayground

SCIENCE 7 - EARTH SCI - SUMMATIVE TEST

45 questions

SCIENCE 7 - EARTH SCI - SUMMATIVE TEST

quiz

Worksheet

•

7th Grade

IPA Kelas 7 - Pencemaran Lingkungan

40 questions

IPA Kelas 7 - Pencemaran Lingkungan

quiz

Worksheet

•

7th - 9th Grade

REPASO UD3 BIOSFERA 22 23 1 ESO

40 questions

REPASO UD3 BIOSFERA 22 23 1 ESO

quiz

Worksheet

•

7th Grade

UJI COBA IPA 1

40 questions

UJI COBA IPA 1

quiz

Worksheet

•

1st Grade - University

PCA G7 Science 3rd MIDTERM

47 questions

PCA G7 Science 3rd MIDTERM

quiz

Worksheet

•

7th Grade

Motion & Pressure Practice / Study guide

40 questions

Motion & Pressure Practice / Study guide

quiz

Worksheet

•

7th Grade

اختبار التحدي

38 questions

اختبار التحدي

quiz

Worksheet

•

7th Grade

elements, compounds, mixtures, bonding

40 questions

elements, compounds, mixtures, bonding

quiz

Worksheet

•

7th Grade