NEW
Font size
WorksheetsSci7 Term 3 Exam Reviewer
Total questions: 50
Worksheet time: 26mins
Which of the following is TRUE about atoms?
It is the smallest divisible particle of matter.
It is the smallest indivisible particle of matter.
It is the smallest identifiable unit into which a pure substance can be divided.
It is the smallest identifiable unit into which a pure substance cannot be divided.
What is the chemical symbol of Silver?
Si
S
Au
Ag
Which of the following BEST describes a metal?
Conductor
Buoyant
Elastic
Brittle
The number of protons is always equal to the
atomic mass
number of neutrons
atomic number
group number
Refer to the chemical equation below. Which of the following is the product?
Na2O
H2O
NaOH
Na2O and H2O
When an atom loses an electron, then it will become a
molecule
ion
positive ion
negative ion
How many electron/s is/are needed to complete the outer shell of Fluorine?
1
2
3
7
When an atom gains 2 electrons to complete the outermost shell, then its charge is
+2
-2
+6
-6
Which of the following is not a metalloid?
Germanium
Arsenic
Antimony
Astatine
Which of the following elements belong to group 2A?
Krypton
Magnesium
Sulfur
Sodium
Which of the following does not belong to period 7?
Sg
Mc
Ra
Rn
Which of the following elements is not included in the compound below?
Nitrogen
Sodium
Hydrogen
Oxygen
Carbon
A chemical compound that is made up of metal and non-metal elements is called
ionic
covalent
metallic
bond
Hydrogen sulfide is
an ionic compound.
a covalent compound
Diphosphorus pentabromide is
an ionic compound.
a covalent compound.
CaF2 is
an ionic compound.
a covalent compound.
MgO is
an ionic compound.
a covalent compound.
Which of the following is an example of neutralization in everyday life?
Rubbing ointment to skin
Adding table salt to meat
Adding bleach to whiten clothes
Taking antacids for gastric pains
If the pH of Ammonia is 12, it means that it is
slightly basic
strongly basic
slightly acidic
strongly acidic
A piece of red litmus paper turns blue and blue litmus paper remains blue when dropped in solution X. Which of the following substances could possibly be solution X?
vinegar
detergent
distilled water
gastric juice
What will happen to red litmus paper if put in an acidic solution?
it will turn blue
it will turn white
it will turn purple
it will remain the same
What will be produced when a strong acid combines with a strong basic solution?
basic
acidic
neutral
alkali
Which of the following is a product of neutralization?
salt
acid
alkali
base
An acidic solution has a pH level of
less than 0.
greater than 7.
greater than 14.
less than 7.
When an acid reacts with a metal, ________ will be produced.
oxygen
ammonia
hydrogen
carbon monoxide
How is the universal indicator different from a litmus paper?
A. Universal indicators can identify the acidity and alkalinity of a substance.
A. Universal indicator and litmus paper can describe the strength of a substance.
A. Universal indicator shows the strength of acidity and alkalinity of a substance.
A. Both indicators are responsible for identifying the pH level of the substance.
Which gas is directly connected to the production of acid rain?
oxygen
nitrogen
sulfur dioxide
carbon dioxide
A boundary where two plates move towards each other is called
pangaea
divergent
transform
convergent
Earthquakes usually occurs in a ___________ boundary.
pangaea
divergent
transform
convergent
In which layer of the Earth does the Mohorovicic Discontinuity is located?
between inner and outer core
between core and mantle
between mantle and crust
between crust and atmosphere
Which of the following refers to the hazard symbol below?
Toxic
Flammable
Irritant
Corrosive
If a car is moving at a constant speed of 75 km/hr, which of the following is TRUE?
It is not moving.
It is accelerating.
It is not accelerating at all.
A. It increases its speed by 60 km per hour.
Having a bonfire to stay warm is an example of
radiation
convection
conduction
all of the above
Which of the following is true about convection?
There is direct contact between the object and source of heat.
It is the transfer of heat by the mass motion of a fluid such as air or water.
The heat can be transferred through space.
An example of this is when a spoon gets hot after putting in hot water.
If light bounces off, it means that it is
dispersed.
refracted.
created.
reflected.
What phenomenon is shown in the picture below?
refraction
reflection
dispersion
emission
Which of the following is NOT TRUE about renewable resources?
readily replaced by natural means.
has a lot of alternative sources.
can be replenished in a short period of time.
can be replenished after a long period of time
Which of the following elements is present in coal, oil, and fossil fuel?
Magnesium
Calcium
Aluminum
Carbon
The object below has what type of energy?
electrical energy
mechanical energy
chemical energy
heat energy
Which of the following is a good example of the energy transformation of electrical energy to thermal energy?
turning on the lamp
cooking food
listening to the radio
ironing clothes
What is the best and most applicable renewable source of energy that can be used in tropical countries and deserts?
solar
wind
fossil fuel
nuclear
Which of the following is an effect of force?
It can cause change in position.
It can cause change in shape.
It can cause change in direction
All of the above
Which of the following is measured by ammeter?
current
voltage
resistance
all of the above
If ampere is the unit of electric current, then what is for voltage?
volt
ohm
newton
resistance
Which of the following circuits will not work?
I and III
I and IV
I and VI
I only
What type of circuit is shown in the picture?
Series
Parallel
Either parallel or series
neither parallel nor series
Which of the following statements is NOT TRUE about the circuit?
There are 2 lamps in the circuit.
It is a closed circuit.
There is a closed-switch in the circuit.
The type of connection is parallel.
Sound travels the fastest in ____________.
solid
liquid
gas
plasma
"Light waves travel faster than sound waves"
This statement is correct.
This statement is incorrect.
Which of the layers of the earth is made up of liquid iron and nickel?
A
B
C
D
E
