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YEAR 7 CHEM TOPICS QUIZ 2021

Total questions: 48

Worksheet time: 4hrs 0mins

Name
Class
Date
1.
As particles are exposed to warmer temperatures they __________
a)
speed up
b)
slow down
c)
stay the same
d)
vibrate
2.
As particles are exposed to colder temperatures they _____
a)
speed up
b)
slow down
c)
stay the same
d)
become ions
3.
What is the change of state from a solid straight to a gas called?
a)
melting
b)
evaporating
c)
freezing
d)
sublimation
4.
What am I? I have a fixed mass, a fixed volume, I cannot be squashed and I have a shape that changes to fit the bottom of my container?
a)
solid
b)
liquid
c)
gas
d)
plasma
5.
Which has particles that travel faster?
a)
gas
b)
solid
6.

True or False: A substance will diffuse faster at low temperatures.

a)

True

b)

False

7.

During the process of melting, the particles become more spaced

a)

TRUE

b)

FALSE

8.

Which image shows particles in a solid?

a)
b)
c)
9.

Which image shows particles in a liquid?

a)
b)
c)
10.

When something goes from gas to liquid, it is called...

a)

Evaporation

b)

Condensation

c)

Deposition

d)

Freezing

11.

Something that goes from liquid to gas is...

a)

Evaporation

b)

Melting

c)

Freezing

d)

Sublimation

12.

The pH of pure water

a)

5.6

b)

7.0

c)

8.1

d)

0.0

13.

Which substance is alkali?

a)

Toothpaste

b)

Vinegar

c)

Lemon juice

d)

Soft drink

14.

The color of litmus in acid:

a)

Red

b)

Blue

c)

Purple

d)

Green

15.

The color of litmus in alkali:

a)

Red

b)

Blue

c)

Purple

d)

Green

16.

The color of litmus in neutral solution:

a)

Red

b)

Blue

c)

Purple

d)

Green

17.

Acids taste .....

a)

sour

b)

bitter

c)

sweet

d)

umami

18.

Rain water is slightly acidic. What is its pH?

a)

1.0

b)

5.6

c)

7.0

d)

8.2

19.

Reaction between acid and alkali producing salt and water:

a)

Combustion

b)

Neutralization

c)

Precipitation

d)

Decomposition

20.

Something that can be used to identify acid/alkali:

a)

Indicator

b)

Oxidator

c)

Reductor

d)

Terminator

21.

The color of universal indicator in hydrochloric acid:

a)

Red

b)

Blue

c)

Purple

d)

Green

22.

The color of universal indicator in sodium hydroxide:

a)

Red

b)

Yellow

c)

Purple

d)

Green

23.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
24.

Which pH levels indicated a strong acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

25.

Have a high melting point

a)

Metals

b)

Non-Metals

26.

Which of these elements are a Non-Metal?

a)

Copper

b)

Gold

c)

Oxygen

27.

Metals are good conductors of heat, true or false?

a)

True

b)

False

28.

Non-Metals generally have ____ boiling points.

a)

High

b)

Low

29.

What is not a property of a metal?

a)

Ductile

b)

Sonorous

c)

Malleable

d)

Low melting point

30.
Iron is a good conductor, malleable and magnetic. What type of element is Iron? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
31.
How do metals differ from nonmetals?
a)
metals are shiny, nonmetals are dull
b)
metals are good insulators, nonmetals are good conductors
c)
metals are powdery
d)
nonmetals are shiny
32.
At room temperature metals are ____________.
a)
plasma
b)
gases
c)
liquid
d)
solid
33.
Hydrogen
a)
Metal
b)
Non-metal
34.
Helium
a)
Metal
b)
Non-metal
35.

Which kind of rock is formed from heat and pressure?

a)

metamorphic rock

b)

igneous rock

c)

sedimentary rock

d)

rock and roll

36.

Which rocks come from volcanoes?

a)

metamorphic rocks

b)

sedimentary rocks

c)

igneous rocks

d)

bedrocks

37.

Which soil has small grains, holds lots of water, and is very sticky when wet?

a)

clay

b)

sand

c)

silt

d)

dirt

38.

All rocks are made of ____________________.

a)

dirt

b)

minerals

c)

soil

d)

igneous

39.

This soil has large, gritty pieces, and it will NOT hold water easily.

a)

clay

b)

dirt

c)

sand

d)

humus

40.

__________________________ rocks form in layers.

a)

Metamorphic

b)

Igneous

c)

Flintstone

d)

Sedimentary

41.
Kim has a rock that contains the imprints of shells on it. What type of rock is it most likely?
a)
igneous
b)
sedimentary
c)
metamorphic
d)
volcanic
42.
What rock is smooth, glassy, and formed from quickly cooled lava after a volcanic eruption?
a)
concrete
b)
metamorphic
c)
sedimentary
d)
igneous
43.
You look at a poster describing different rocks. Which is mostly likely a sedimentary rock?
a)
obsidian- glassy and dark
b)
limestone- made up of many layers
c)
pumice- full of air pockets
d)
granite-speckled many colors
44.
Which of the following is an igneous rock?
a)
limestone
b)
gypsum
c)
gneiss
d)
basalt
45.

The outside part of our planet is called...

a)

CRUST

b)

BEDROCK

c)

SOIL

d)

MAGMA

46.
Which is the hottest part of the Earth?
a)
The core
b)
The mantle
c)
The crust
d)
The Asthenosphere
47.
Which is the coolest part of the planet?
a)
inner core
b)
outer core
c)
mantle
d)
crust
48.

Which layer shown on the picture can be considered as the youngest layer?

a)

Layer C

b)

Layer B

c)

Layer D

d)

Layer E

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