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End of the year review

Total questions: 60

Worksheet time: 30mins

Name
Class
Date
1.

Which of the following are signs of a chemical reaction? (choose all that apply)

a)

Formation of a gas

b)

A change in temperature

c)

A change in color

d)

A change in size

2.

When a chemical reaction occurs...

a)

New molecules and atoms are formed

b)

Molecules and atoms are rearranged

c)

Molecules and atoms disappear

d)

Molecules and atoms are destroyed

3.

You have a large glass of water and you stir salt into it until all the salt completely dissolves. Is this a chemical reaction?

a)

Yes

b)

No

4.

A change in the shape of an object is an example of _________________.

a)

a chemical change

b)

energy

c)

an endothermic change

d)

a physical change

5.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
6.

What are the PRODUCERS in this food web?

a)

Wildflowers and Grass

b)

Rabbit and Mouse

c)

Snake and Hawk

d)

Grass and Mouse

7.

In this food web, how many different organisms feed on the producer?

a)

2

b)

3

c)

4

d)

5

8.

Which is an apex predator in this food web?

a)

Hawk

b)

Snake

c)

Frog

d)

Bird

9.

______ are organisms that break down dead plants or animals into the substances that plants need for growth.

a)

Decomposers

b)

Primary Consumers

c)

Producers

d)

Secondary Consumers

10.
Anything that has mass & takes up space
a)
gravity
b)
force
c)
matter
d)
volume
11.
Smallest unit of an element
a)
compound
b)
atom
c)
molecule
d)
product
12.
Substance that cannot be broken into simpler substances
a)
element
b)
molecule
c)
gram
d)
proton
13.
Substances that form as the result of a chemical reaction
a)
products
b)
reactants
c)
coefficients
d)
subscripts
14.
Substances present at the start of a chemical reaction
a)
subscripts
b)
coefficients
c)
reactants
d)
products
15.
A 55-gram egg is placed in a pot. After the egg is boiled, which is most likely the mass of the egg?
a)
50 
b)
55 
16.

An oreo cookie has a mass of 20 grams. It gets crushed into crumbs for a recipe. What is the mass of the crumbs?

a)

15 grams

b)

25 grams

c)

20 grams

17.

Matter is anything that ---

a)

takes up space and has mass.

b)

is in our universe.

c)

is light, sound or ideas.

18.

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

a)

hotter to colder

b)

colder to hotter

c)

hotter to hotter

d)

colder to colder

19.

Which is an example of heat being transferred by conduction?

a)

a furnace heating the air in a school

b)

an ice cube melting in a person’s hand

c)

a pot of water on a stove boiling

d)

the sun heating water in a swimming pool

20.

The baby chickens kept warm by the heat lamps. This is an example of ________.

a)

conduction

b)

convection

c)

radiation

21.

The type of heat transfer that creates currents in water is called ________.

a)

conduction

b)

convection

c)

radiation

22.

A producer is something that:

a)

Eats plants

b)

Makes its own food

c)

Eats animals

d)

Eats plants and animals

23.

Consumers...

a)

Make their own food

b)

Go through photosynthesis

c)

Eat other organisms

d)

Breathe in carbon dioxide

24.

Which of these things is NOT a consumer

a)

Human

b)

Whale

c)

Tree

d)

Chicken

25.

Arrows in a food web show the flow of

a)

energy

b)

protein

c)

nutrients

d)

glucose

26.

What do decomposers eat?

a)

Dead things

b)

Living things

27.

Mushroom (Fungus)

a)

Decomposer

b)

Producer

c)

Consumer

28.

Trees

a)

Decomposers

b)

Consumers

c)

Producers

29.

Cactus

a)

Abiotic

b)

Biotic

30.

What are the PRODUCTS in photosynthesis?

a)

Sunlight and water

b)

Carbon dioxide and water

c)

Glucose and carbon dioxide

d)

Glucose and oxygen

31.
What are the three states of matter?
a)
solid, volume, mass
b)
density, volume, mass
c)
solid, liquid, gas
d)
density, gas, volume
32.

The center of an atom is called the _________.

a)

electron cloud

b)

atomic center

c)

neutron cloud

d)

nucleus

33.

What two subatomic particles are located in the nucleus?

a)

neutrons and electrons

b)

protons and neutrons

c)

protons and electrons

34.

the smallest particle that can still be identified as the matter it came from (and can't be 'cut' any smaller).

a)

energy

b)

atom

c)

electrons

d)

compounds

35.

If a species no longer exists on Earth, it is considered to be...

a)

new

b)

endangered

c)

extinct

d)

short-listed

36.

If a species is in danger of extinction in the foreseeable future, it is considered to be...

a)

remote

b)

re-listed

c)

extinct

d)

endangered

37.

True or False


Scientist and environment experts agree that earth is currently going through a Mass Extinction(most animals and plant species are dying)?

a)

True

b)

False

38.

There are about 30 Amur Leopards left in wild. What would this species be classified as?

a)

Threatened

b)

Extinct

c)

Endangered

d)

Critically Endangered

e)

Extinct in the wild

39.

Plants make their own food called

a)

glucose

b)

oxygen

c)

carbon dioxide

d)

chloroplast

40.

Where does photosynthesis occur?

a)

mitochondria

b)

chloroplasts

c)

cytoplasm

41.

Where does cellular respiration take place?

a)

chloroplasts

b)

stomata

c)

mitochondria (in cytoplasm)

42.

In cellular respiration, what are the products (the output)?

a)

water

b)

carbon dioxide

c)

energy (ATP)

d)

glucose

43.

A proton has a ___________ charge.

a)

positive

b)

negative

c)

neutral

d)

massive.

44.

An electron has a _________ charge

a)

positive

b)

neutral

c)

negative

d)

massive

45.
The particles with no charge in an atom are the _______.
a)
electrons
b)
neutrons
c)
protons
d)
protons and neutrons
46.

This is an example of what type of matter?

a)

solid

b)

liquid

c)

gas

47.

This is an example of what type of matter?

a)

solid

b)

liquid

c)

gas

48.

The Law of Conservation of Mass says that matter can neither be __________ or __________.

a)

created; destroyed

b)

recycled; renewed

c)

subtracted; added

d)

joined; separated

49.

Which of the follow is NOT an example of matter

a)

Ice

b)

Air

c)

Light

d)

Water

50.
This is known as a relationship in which one organism benefits, while the other is unaffected.
a)
Parasitism
b)
Mutualism
c)
Immigration
d)
Commensalism
51.
The organism that is hunted and eaten in a particular feeding relationship is known as:
a)
Predator
b)
Decomposer
c)
Prey
d)
Autotroph
52.
An animal that feeds on what another animal has killed is known as a:
a)
Scavenger
b)
Mutualist
c)
Decomposer
d)
Parasite
53.
This is known as a relationship in which both organisms involved benefit. 
a)
Predator-Prey
b)
Commensalism
c)
Mutualism
d)
Decomposition
54.

Plover birds typically eat parasites trapped inside of crocodiles' mouths. The plover receives a meal, while the crocodile is rid of parasites. What type of ecological relationships does this scenario represent?

a)

Mutualism

b)

Predator/Prey

c)

Competition

d)

Commensalism

55.

Lions typical fight to death for territory, mates, and food sources. Lions are most likely fighting due to:

a)

Commensalism

b)

Mutualism

c)

Competition

d)

Parasitism

56.

A ------ change occurs when a new substance forms

a)

physical

b)

chemical

57.

A carton of milk going sour is a

a)

physical change

b)

chemical change

58.

Water freezing into ice is a

a)

physical change

b)

chemical change

59.

tearing a piece of paper into pieces

a)

physical change

b)

chemical change

60.

A banana turning brown is a

a)

physical change

b)

chemical change

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