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Total questions: 115

Worksheet time: 2hrs 46mins

Name
Class
Date
1.

When would a metal be shiny?

a)

when cut

b)

when polished

c)

when left in the rain

d)

when painted

2.

You found an object and want to determine if it is a metal or a non-metal. You carried out some tests on it and found out the following:

* you can bend it

* it does not break when you drop it

* it feels cold

Is it a metal or a non-metal?

a)

non-metal

b)

metal

3.

Which of the following are true for non-metals?

a)

brittle

b)

conduct heat well

c)

sonorous

d)

do not conduct electricity

4.
a)

an alloy

b)

a pure metal

5.

Non-metals are typically good...

a)

conductors of heat and electricity

b)

insulators of heat and electricity

6.

Why is it important to wear safety goggles when doing an experiment involving evaporating in the lab?

a)

to protect the eyes from UV radiation

b)

to protect your eyes from broken glass

c)

because it is dangerous to get steam in your eyes

d)

because the liquid may start spitting

7.

name the symbol

a)

corrosive

b)

explosive

c)

oxidising

d)

flammable

8.

name the symbol

a)

corrosive

b)

explosive

c)

oxidising

d)

flammable

9.

A chemical solution whihc is neither acidic or basic

a)

pH scale

b)

universal indicator

c)

neutral

d)

litmus

10.

A mixture of indicators which show different colours in solutions of different pH

a)

pH scale

b)

universal indicator

c)

neutral

d)

litmus

11.

A substance that can destroy living tissue. It can cause burns

a)

corrosive

b)

explosive

c)

oxidising

d)

flammable

12.

material through which a wave travels

a)

medium

b)

pitch

c)

particles

d)

loudness

13.

1.Sound is a form of energy made by ____________

a)

electricity

b)

vibration

c)

light

d)

volume

14.

There is no sound in ______________.

a)

electricity

b)

air

c)

water

d)

space

15.

Sound travels 4 times ____________than through water than through air.

a)

faster

b)

slower

c)

higher

d)

lower

16.

Sound waves tend to travel more __________in gases

a)

fast

b)

quickly

c)

slowly

d)

normally

17.
You and your father inspect an empty house with the hopes of buying it. You walk through the rooms talking to one another, and you notice that your voices and footsteps are echoing in the big, empty house. What causes the echo?
a)
sound waves reflecting off smooth, flat surfaces throughout the house
b)
sound waves moving around the large rooms
c)
sound waves moving slowly through air
d)
sound waves refracting around corners in the empty rooms
18.
A wave in which the particles vibrate in the same direction as that in which the wave is traveling; sound waves
a)
longitudinal wave
b)
ocean wave
c)
transverse wave
d)
mechanical wave
19.
A reflected sound wave is know as a/an ___________.
a)
frequency
b)
pitch
c)
echo
d)
rarefaction
20.
A wave that requires a medium through which to travel
a)
mechanical wave
b)
chemical wave
c)
electromagnetic wave
d)
pitch
21.

Plates that form the continents are called (a)   plates.

22.

Why did people not believe Wegener?

a)

He did not have any evidence for his ideas.

b)

He couldn't explain how continental drift happened

23.

When does a lunar eclipse occur?

a)

when the Earth comes between the Sun and the Moon

b)

when the Sun comes between the Earth and the Moon

c)

When the Moon comes between the Sun and the Earth

24.

Name the eclipse

(a)  

25.

class of organisms to which molds and yeasts belong

a)

bacteria

b)

fungi

c)

protozoa

26.

Which animal is a tertiary consumer?

a)

Owl

b)

Mice

c)

Grass seed

27.

The Producer

a)

The Sun

b)

The Grass

c)

The Mouse

d)

The Snake

28.

The Primary consumer in the picture

a)

Grass

b)

MIce

c)

Eagle

d)

Snake

29.

The organisms that has the most energy is found

a)

At the top of the energy pyramid

b)

At the bottom of the energy pyramid

30.

Herbivores eat

a)

Plants

b)

Animals

c)

Plants and Animals

31.

Where do plants get their energy from

a)

Other plants

b)

Sun

c)

animals

32.

What does the arrow point to in a food chain

a)

what it eats

b)

what eats it

33.
What is the study of the interactions among organisms and  between organisms and their environments called?
a)
Biology
b)
Ecology
c)
Astronomy
d)
Biosphere
34.
The direction of the flow of energy in a food web is represented by ___.
a)
Light bulbs
b)
Dotted Lines
c)
Arrows
d)
Bubbles
35.
Which of these is an example of an autotroph?
a)
Sunflower
b)
Krill
c)
Leopard
d)
Hummingbird
36.

An organism that lives by breaking apart dead animal and plants into simpler parts is...

a)

scavenger

b)

consumer

c)

decomposer

d)

carnivore

37.
Which of the following arrangement is the correct food chain?
Antara susunan yang berikut, yang manakah ialah rantai makanan yang betul?
a)
R → P → Q → S
b)
Q → R → P → S
c)
P → Q → R → S
d)
Q → P → R → S
38.

How is a food web different from a food chain?

a)

Food webs contain only producers, not consumers.

b)

Food webs do not include decomposers.

c)

Food webs contain many different, linked food chains.

d)

Food webs exist in aquatic environments; food chains exist in terrestrial environments.

39.

This organism is most likely

a)

A primary consumer

b)

A secondary consumer

c)

A decomposer

d)

A producer

40.
What is a food chain?
a)
A long chain made of food 
b)
A list of ingredients used to cook food 
c)
How animals depend on plants and animals to survive
41.
What do you call an animal that hunts and eats other animals?
a)
Prey
b)
Producer
c)
Predator 
d)
Decomposer 
42.

In an electrical wire, the copper core is a ........................... and the two plastic covers are ............................. (ANS form: A, B)

(a)  

43.

What are the safe ways to work with electricity?

a)

Turn off mains electricity before fixing exposed parts

b)

use exposed cables and broken plugs

c)

Keep electrical appliances out of wet places

d)

put your finger in a socket

e)

not overload an electrical outlet

44.
What is a switch's function in a circuit?
a)
to make the current hotter or colder
b)
turn on and off the flow of current
c)
the pathway that current flows
d)
to add more power to the circuit
45.
This is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
46.
Is the circuit pictured complete or incomplete? 
a)
Complete
b)
Incomplete
47.

Which of the following is an insulator?

a)

an eraser

b)

a wire

c)

a penny

d)

a metal spoon

48.

Which of the following is a conductor?

a)

wood

b)

rubber

c)

metal

d)

plastic

49.
Electric current is measured in ______.
a)
Watts
b)
Volts
c)
Amperes
50.
Will the light bulb light up if the switch remains open as shown?
a)
Yes, because the circuit will be complete.
b)
Yes, because the battery will push the electric current.
c)
No, because the electric circuit is not complete.
d)
No, because the battery will push the electric current.
51.
Tasha tested several items to see if they could conduct electricity.  Her data is shown below. What is the best claim she could make from her data?
a)
Wood is an insulator.
b)
Metal is an insulator.
c)
Keys are insulators.
d)
Toothpicks are conductors.
52.
What supplies the energy in an electric circuit?
a)
light bulb
b)
conductor
c)
wire
d)
battery
53.

Electric current is defined as

a)

detect electric current

b)

negative terminal to positive terminal

c)

positive terminal to negative terminal

d)

the flow rate of electric charges through a conductor

54.

Electrons flows from

a)

detect electric current

b)

negative terminal to positive terminal

c)

positive terminal to negative terminal

d)

the flow rate of electric charges through a conductor

55.
What is voltage measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
56.

​If the one bulb burned out, what would happen to the other bulb?

a)

stay lit

b)

not light up

c)

brighter

d)

dimmer

57.

What type of circuit is shown in the image?

a)

series

b)

parallel

58.

Are the lights on in this circuit?

a)

yes, the lights are on

b)

no, the lights are off

59.
A neutralization reaction will (almost) always produce...
a)

water & a salt

b)
water
c)

a salt

d)
water & carbon
60.

A type of chemical that forms solutions that taste sour, due to high concentrations of positive hydrogen ions

a)

acid

b)

alkali

c)

salt

d)

pH

61.

What is considered to be in the middle of the pH scale

a)

acidic

b)

neutral

c)

alkaline

d)

indicator

62.
In a ____ reaction, an acid and a base produce a salt and a water. 
a)
concentrated
b)
decomposition
c)
dilute
d)
neutralization
63.
pH less than 7.
a)
Acids
b)

Alkalis

c)
All
64.

Which range of numbers represent alkaline solutions?

a)
0-6
b)
7
c)
8-14
d)
3-9
65.
Tastes bitter.
a)
Acids
b)

Alkalis

c)
Salts
d)
All
66.
Feels slippery.
a)
Acids
b)

Alkalis

c)
All
67.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
68.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
69.

Bleach is a strong alkali, what is the pH level of bleach?

a)
13
b)
14
c)
1
d)
2
70.

A bee sting is acidic and can be neutralized by?

a)

water

b)

salt

c)

acid

d)

alkali

71.

Why is your toothpaste alkaline?

a)

It can neutralise strong alkalis in

your mouth

b)

It can neutralise acid in

your mouth

c)

It can refresh your teeth

d)

Toothpaste is not alkaline.

72.

Excess acids in stomach can be neutralized using ............

a)

antacid

b)

vinegar

c)

slaked lime

d)

hydrochloric acid

73.
In a neutralisation reaction, what is the function of the indicator?
a)
To indicate that the mixture is neutral
b)
To indicate that hot water should be added
c)
To indicate that the flask should be shaken
d)
To indicate that a precipitate is formed
74.

A change in matter that produces one or more new substances is a ________________ change.

a)

physical

b)

chemical

75.

A _____________ change is any change that alters the form or appearance of a substance but does not change it into another substance.

a)

physical

b)

chemical

76.

In a chemical reaction, the _____________ are always written on the right side of the equation

a)

reactants

b)

coefficients

c)

products

d)

subscripts

77.

A gel ice pack getting cold after you put it in the freezer for an hour - physical or chemical change? 

a)

Chemical Change

b)

Physical Change

78.

 Turning on a Bunsen burner - physical or chemical change? 

a)

Chemical Change

b)

Physical Change

79.

Which of the following IS a physical change?

a)

Getting a haircut

b)

Milk going sour

c)

Rusting metal

d)

A new compound being made

80.

What happens to the chemical structure of water when it changes state?

a)

Water molecules break apart to form individual atoms

b)

Water molecules melt into gas molecules

c)

Water molecules harden into ice molecules

d)

Nothing happens to the chemical structure

81.

What is the left part of a chemical equation called?H2 + O → H2O

a)

Reactants

b)

Yields 

c)

Products 

d)

Chemical Equation 

82.

a chemical reaction has occurred if 

a)

there is a precipitate

b)

there is a temperature change

c)

there is a color change

d)

All of these answers are evidence

83.

A chemical reaction in which a substance burns in oxygen is known as ....

a)

combustion

b)

combination

84.

A chemical reaction is...

a)

When elements in atoms are rearranged to form a new substance.

b)

When atoms in elements or compounds are rearranged but don’t form a new substance.

c)

When compounds in atoms are rearranged but don’t form a new substance.

d)

When atoms in elements or compounds are rearranged to form a new substance.

85.

Adil is carrying out an experiment. He notices an increase in the temperature of his solution.


Did Adil's experiment involve a chemical reaction?

a)

No

b)

Yes

86.

Carbon is one of the reactants used when forming carbon dioxide. What is a reactant?

a)

The substances formed in a reaction.

b)

A type of change where you can go back to the original substance.

c)

A type of change where you can't go back to the original substances.

d)

The starting substance in a reaction.

87.

Study the equation above:


Using your knowledge of equations, identify the substance that is NOT a reactant.

a)

oxygen

b)

water

c)

hydrogen

88.

Which one of the following is an example of a chemical change?

a)

Melting of chocolate

b)

Rusting of iron

c)

Boiling of water

d)

Condensation on window

89.
How do you test for Hydrogen gas?
a)
a) Lime water goes milky/cloudy
b)
b) Relights a glowing splint
c)
c) Lighted splint gives a squeaky pop.
d)
d) Bleaches damp indicator paper.
90.
Aluminium + Hydrochloric acid goes to 
a)
aluminium oxide
b)
aluchloride
c)
aluminium chloride 
d)
aluminium chloride + hydrogen 
91.
How can the gas hydrogen be tested for?
a)
Relights a splint
b)
Limewater goes cloudy
c)
Squeaky pop test
d)
Puts out a lit flame
92.

Which observation is NOT a sign of a chemical reaction?

a)

fizzing

b)

temperature change

c)

dissolving

d)

colour change

93.

This is how you test for hydrogen gas

a)

Put a glowing splint in the gas. It will relight

b)

Put a lit splint in the gas. It will go pop

c)

Bubble the gas through limewater which will go cloudy

d)

The hydrogen will smell like rotten eggs

94.
What happens in ALL chemical changes?
a)
Change in state of matter
b)
A new substance is formed
c)
Bubbles are produced
d)
An explosion
95.
Is wood burning a physical or chemical change?
a)
Physical 
b)
Chemical
96.
Is milk going sour a physical or chemical change?
a)
Physical 
b)
Chemical
97.
Is mold growing on cheese a physical or chemical change?
a)
Physical 
b)
Chemical
98.
Is making orange juice a physical or chemical change?
a)
Physical 
b)
Chemical
99.
Is sharpening a pencil a physical or chemical change?
a)
Physical 
b)
Chemical
100.

What gas is produced when a metal reacts with an acid

a)

hydrogen

b)

hydrogen oxide

c)

oxygen

d)

carbon dioxide

e)

squeaky pop

101.

which gas is important for the burning of substances?

a)

Sulfur

b)

Carbon

c)

Oxygen

102.
Which of these is not a chemical reaction?
a)
Burning of wood
b)
Milk going bad
c)
Mixing vinegar and baking soda
d)
Melting of ice
103.
Substances present at the start of a chemical reaction
a)
subscripts
b)
coefficients
c)
reactants
d)
products
104.
Another term for burning is
a)
Fire triangle
b)
Magnesium oxide
c)
Combustion
d)
Bustion
105.

What are the products of combustion?

a)

Hydrogen + oxygen

b)

Carbon dioxide + water

c)

Carbon dioxide + hydrogen

d)

Carbon + water

106.
Which of these is NOT a sign that a chemical change has occurred? 
a)
Change in shape.
b)
An unexpected color change
c)
A temperature change
d)
The formation of a precipitate
107.
What indicates a chemical reaction occurred?
a)
Heat or Light is released
heat or light is produced
b)
gas (bubbles) produced
c)
color change
d)
all of the above
108.

You know that a chemical reaction has occurred if

a)

there is a precipitate (new solid)

b)

there is a color change.

c)

there is a temperature change.

d)

All of these answers are evidence.

109.

A chemical change is different than a physical change because in a chemical change

a)

chemicals are used

b)

molecules do not physically touch

c)

a new substance is formed and in a physical no new substance is formed

d)

the change can be seen but in a physical change it cannot

110.
Which of the following is NOT evidence that that a chemical reaction has occurred?
a)
produces light/heat
b)
production of a gas
c)
formation of a precipitate
d)
melting
111.

Complete the word equations.

copper oxide + sulfuric acid →

(black)

a)

copper sulfate + water

(precipitate)

b)

copper sulfate + water

(blue)

c)

copper sulfate + water

(white)

d)

copper sulfate + water

(green)

112.

Complete the word equations.

magnesium + hydrochloric acid →

a)

magnesium chloride + hydrogen

b)

magnesium chloride

c)

magnesium chloride + water

d)

magnesium chloride + carbon dioxide

113.

When potassium is placed in water, hydrogen has given off. The reaction produced

a)

an alkali

b)

a precipitate

c)

so much heat

d)

a blue solution

114.
Which is the name of the kind of solid substance formed in this figure?  
a)
aqueous 
b)
precipitate
c)
acid
d)
synthesis 
115.

Marble Chips in Hydrochloric Acid makes a gas that turns lime water cloudy. What is the name of the gas?

a)

Hydrogen

b)

Oxygen

c)

Carbon Dioxide

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