Worksheets1st Mastery test in Science 4
Total questions: 51
Worksheet time: 2hrs 50mins
I. TRUE OR FALSE
The mass and volume of an object affect its density.
TRUE
FALSE
I. TRUE OR FALSE
A bag will float if it is denser than water.
TRUE
FALSE
I. TRUE OR FALSE
Biodegradable products break down or decompose easily.
TRUE
FALSE
I. TRUE OR FALSE
Reusing, recycling, and reducing trash will help save Mother Earth.
TRUE
FALSE
I. TRUE OR FALSE
Household materials should be placed together in one cabinet.
TRUE
FALSE
I. TRUE OR FALSE
Flammable materials should be stored in a hot place.
TRUE
FALSE
I. TRUE OR FALSE
The chemical composition of water are composed of two hydrogen and 2 oxygen
TRUE
FALSE
I. TRUE OR FALSE
The chemical symbol for Mercury is Hg.
TRUE
FALSE
I. TRUE OR FALSE
A matter's ability to ignite the fire is an example of Physical property.
TRUE
FALSE
I. TRUE OR FALSE
When water is boiled it becomes vapor
TRUE
FALSE
II. Identification
It refers to the measure of the resistance of materials to scratch deform or break when physical force is applied.
(a)
II. Identification
It is the property of a metal that allows it to be hammered, rolled, or shaped without breaking.
(a)
II. IDENTIFICATION:
The process of changing GAS to SOLID is called (a)
II. IDENTIFICATION:
The process of changing SOLID to GAS without passing the liquid state is called (a) .
II. IDENTIFICATION:
The process of changing LIQUID to GAS is called (a)
II. IDENTIFICATION:
The process of changing GAS to LIQUID is called (a)
II. IDENTIFICATION:
. The process of changing LIQUID to SOLID is called (a)
IDENTIFICATION:
The process of changing SOLID to LIQUID is called (a) .
IDENTIFICATION:
Who is the British Scientist who Accidentally discovered a very powerful medicine against infection?
(a)
IDENTIFICATION:
Together with his team, they successfully discovered a silk-lace fabric called nylon.
(a)
Two or more atoms joined by chemical bonds
Atom
Compound
Element
Molecule
How many elements are in a molecule of caffeine?
4
24
8
16
Which is a compound?
NaOH
Fe
N
He
The chemical formula for rust is Fe2O3. What does this tell us about a rust molecule?
It has 2 atoms of Iron and 3 atoms of Oxygen
It has 2 atoms of Oxygen and 3 atoms of Iron
It has 6 atoms of Iron and 3 atoms of Oxygen
There are 5 atoms in any combination of Iron and Oxygen
Tungsten
W
T
Tg
N
Potassium
P
K
Pt
k
Iron
Ir
In
Fe
FE
Calcium
Cl
Ca
C
Cm
Which property is an example of a chemical property?
The ability to burn
The ability to evaporate
The ability to dissolve
The ability to melt
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?
color
dissolves
crystalline structure
burns
Which is Not a Physical Property
odor
sinks in water
Reacts with bleach
Density
_______ is waste obtained from plants and animals.
Biodegradable
Non - Biodegradable
Non - Biodegradable:
Cannot be broken down by biological process.
Capable of being broken down by biological processes, such as the action of bacteria.
A discarded solid material, such as garbage, refuse, or sludges
A liquid that has passes through solid waste and has extracted dissolved or suspended materials from that waste, such as pesticides in the soil.
Which of the following is not a chemical property?
rusting
rotting
boiling
burning
What kind of physical property is this? Temperature
intensive
extensive
What kind of physical property is this? Volume
intensive
extensive
Which group of objects easily sinks into the water?
marble, pebble, metal spoon
bond paper, cardboard, napkin
plastic spoon, bamboo tube, rubber floater
cloth, fan, plastic cover
Which among these waste materials may be put together in a garbage bin?
paper, tissue, plastic lid
bottle cover, jar, glass
wax paper, plastic cup, napkin
leftover food, fruit peelings, soggy fries
Which statement BEST describes why the water vapor in the air formed liquid water on the outside of the glass?
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?
Chemical
Physical
The enhanced greenhouse effect is sometimes referred to as ________.
Heat waves
climate
global warming
temperature
Which picture shows the bad effect of physical change?
Which picture does not show the bad effect of chemical change?
ESSAY:
What is Global warming? As a grade 4 student, how can you help prevent or stop global warming?
