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1st Mastery test in Science 4

Total questions: 51

Worksheet time: 2hrs 50mins

Name
Class
Date
1.

I. TRUE OR FALSE

The mass and volume of an object affect its density.

a)

TRUE

b)

FALSE

2.

I. TRUE OR FALSE

A bag will float if it is denser than water.

a)

TRUE

b)

FALSE

3.

I. TRUE OR FALSE

Biodegradable products break down or decompose easily.

a)

TRUE

b)

FALSE

4.

I. TRUE OR FALSE

Reusing, recycling, and reducing trash will help save Mother Earth.

a)

TRUE

b)

FALSE

5.

I. TRUE OR FALSE

Household materials should be placed together in one cabinet.

a)

TRUE

b)

FALSE

6.

I. TRUE OR FALSE

Flammable materials should be stored in a hot place.

a)

TRUE

b)

FALSE

7.

I. TRUE OR FALSE

The chemical composition of water are composed of two hydrogen and 2 oxygen

a)

TRUE

b)

FALSE

8.

I. TRUE OR FALSE

The chemical symbol for Mercury is Hg.

a)

TRUE

b)

FALSE

9.

I. TRUE OR FALSE

A matter's ability to ignite the fire is an example of Physical property.

a)

TRUE

b)

FALSE

10.

I. TRUE OR FALSE

When water is boiled it becomes vapor

a)

TRUE

b)

FALSE

11.

II. Identification

It refers to the measure of the resistance of materials to scratch deform or break when physical force is applied.

(a)  

12.

II. Identification

It is the property of a metal that allows it to be hammered, rolled, or shaped without breaking.

(a)  

13.

II. IDENTIFICATION:

The process of changing GAS to SOLID is called (a)  

14.

II. IDENTIFICATION:

The process of changing SOLID to GAS without passing the liquid state is called (a)   .

15.

II. IDENTIFICATION:

The process of changing LIQUID to GAS is called (a)  

16.

II. IDENTIFICATION:

The process of changing GAS to LIQUID is called (a)  

17.

II. IDENTIFICATION:

. The process of changing LIQUID to SOLID is called (a)  

18.

IDENTIFICATION:

The process of changing SOLID to LIQUID is called (a)   .

19.

IDENTIFICATION:

Who is the British Scientist who Accidentally discovered a very powerful medicine against infection?

(a)  

20.

IDENTIFICATION:

Together with his team, they successfully discovered a silk-lace fabric called nylon.

(a)  

21.
A pure substance that cannot be broken down into other substances by chemical or physical means. 
a)
compound          
b)
atom
c)
mixture 
d)
element
22.
NaHCO3 is an example of —
a)
an abbreviation
b)
a compound
c)
a mixture
d)
an element
23.

Two or more atoms joined by chemical bonds

a)

Atom

b)

Compound

c)

Element

d)

Molecule

24.

How many elements are in a molecule of caffeine?

a)

4

b)

24

c)

8

d)

16

25.

Which is a compound?

a)

NaOH

b)

Fe

c)

N

d)

He

26.

The chemical formula for rust is Fe2O3. What does this tell us about a rust molecule?

a)

It has 2 atoms of Iron and 3 atoms of Oxygen

b)

It has 2 atoms of Oxygen and 3 atoms of Iron

c)

It has 6 atoms of Iron and 3 atoms of Oxygen

d)

There are 5 atoms in any combination of Iron and Oxygen

27.

Tungsten

a)

W

b)

T

c)

Tg

d)

N

28.

Potassium

a)

P

b)

K

c)

Pt

d)

k

29.

Iron

a)

Ir

b)

In

c)

Fe

d)

FE

30.

Calcium

a)

Cl

b)

Ca

c)

C

d)

Cm

31.

Which property is an example of a chemical property?

a)

The ability to burn

b)

The ability to evaporate

c)

The ability to dissolve

d)

The ability to melt

32.

Juan observes these properties of an unknown substance. the substance is white, has a crystalline structure, dissolves in water and burns when a flame is applied. What is a chemical property of the substance?

a)

color

b)

dissolves

c)

crystalline structure

d)

burns

33.

Which is Not a Physical Property

a)

odor

b)

sinks in water

c)

Reacts with bleach

d)

Density

34.

_______ is waste obtained from plants and animals.

a)

Biodegradable

b)

Non - Biodegradable

35.

Non - Biodegradable:

a)

Cannot be broken down by biological process.

b)

Capable of being broken down by biological processes, such as the action of bacteria.

c)

A discarded solid material, such as garbage, refuse, or sludges

d)

A liquid that has passes through solid waste and has extracted dissolved or suspended materials from that waste, such as pesticides in the soil.

36.

Which of the following is not a chemical property?

a)

rusting

b)

rotting

c)

boiling

d)

burning

37.

What kind of physical property is this? Temperature

a)

intensive

b)

extensive

38.

What kind of physical property is this? Volume

a)

intensive

b)

extensive

39.

Which group of objects easily sinks into the water?

a)

marble, pebble, metal spoon

b)

bond paper, cardboard, napkin

c)

plastic spoon, bamboo tube, rubber floater

d)

cloth, fan, plastic cover

40.

Which among these waste materials may be put together in a garbage bin?

a)

paper, tissue, plastic lid

b)

bottle cover, jar, glass

c)

wax paper, plastic cup, napkin

d)

leftover food, fruit peelings, soggy fries

41.
If enough heat is taken away from a container of water, what will happen to the water?
a)
It will begin to boil.
b)
It will become a solid.
c)
It will turn into a gas.
d)
It will increase in weight.
42.
What happens when a piece of wood burns?
a)
A physical change takes place.
b)
A chemical change takes place.
c)
The wood loses its gravity.
d)
The wood loses its inertia.
43.
Which answer makes a correct statement?
a)
Physical change only changes the size.
b)
Physical change only changes the color.
c)
Physical changes begin and end with the same matter.
d)
Physical changes change the matter into something total different.
44.
Which is NOT an example of condensation?
a)
Dew is found on the grass on a summer morning.
b)
Drops of water form on a cold can of soda on a hot day.
c)
A bucket of water left uncovered eventually becomes empty.
d)
The walls of a bathroom are damp after someone takes a showers.
45.
Students observed as small drops of water collected on the outside of a glass.
Which statement BEST describes why the water vapor in the air formed liquid water on the outside of the glass?
a)
The humidity outside the glass turns the vapor to liquid water.
b)
The water vapor pulls the water from inside the glass to outside the glass.
c)
The temperature of the water inside the glass is colder than the air outside the glass.
d)
The temperature of the water inside the glass is warmer than the air outside the glass.
46.
A teacher is demonstrating physical and chemical changes to her class. Which action should she use to demonstrate a chemical change?
a)
cutting a piece of paper
b)
folding a piece of paper
c)
tearing a piece of paper
d)
burning a piece of paper
47.

Ms. Paolozzi wanted to see what would happen if she put lemonade mix in a pot of water and boiled the water. When the water evaporated, there was lemonade mix at the bottom of the pot. What type of change is this?

a)

Chemical

b)

Physical

48.

The enhanced greenhouse effect is sometimes referred to as ________.

a)

Heat waves

b)

climate

c)

global warming

d)

temperature

49.

Which picture shows the bad effect of physical change?

a)
b)
c)
d)
50.

Which picture does not show the bad effect of chemical change?

a)
b)
c)
d)
51.

ESSAY:

What is Global warming? As a grade 4 student, how can you help prevent or stop global warming?

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