NEW
Font size
WorksheetsGrade 7 Science MCQs
Total questions: 30
Worksheet time: 15mins
Anything that has mass and occupies space is called:
Energy
Matter
Atom
Element
Matter is made of small particles called:
Cells
Molecules
Atoms
Compounds
Elements are arranged in the:
Food chain
Atomic model
Periodic table
Mixture chart
A substance made of only one type of atom is called:
Compound
Mixture
Element
Molecule
A substance made of more than one type of atom chemically combined is a:
Element
Compound
Atom
Mixture
How many known elements are there?
92
100
108
118
Gold is classified as:
Compound
Mixture
Element
Molecule
A water particle is made of:
Two oxygen atoms and one hydrogen atom
One oxygen atom and two hydrogen atoms
Three hydrogen atoms
One hydrogen atom only
Water is classified as a:
Element
Mixture
Compound
Atom
Which process absorbs heat energy?
Exothermic
Combustion
Endothermic
Freezing
Which of the following is a property of metals?
Dull
Poor conductor
Brittle
Shiny
Which property belongs to non-metals?
Malleable
Good conductor
Dull appearance
High melting point
Ionic compounds are usually:
Gases at room temperature
Liquids at room temperature
Solids with high melting points
Poorly bonded
Covalent (molecular) compounds are made of:
Metal and non-metal
Two non-metals
Two metals
Ions only
What is the formula used to calculate weight?
Mass ÷ Gravity
Mass × Gravity
Density × Volume
Volume ÷ Mass
What is the weight of a 30 kg object on Earth (9.8 N/kg)?
90 N
111 N
294 N
300 N
Which is a size-dependent property?
Density
Boiling point
Mass
Melting point
Which is a size-independent property?
Volume
Mass
Density
Length
Density is calculated using the formula:
Mass × Volume
Volume ÷ Mass
Mass ÷ Volume
Gravity ÷ Mass
An object with density less than water will:
Sink
Dissolve
Float
Break
Which statement is TRUE?
Conductivity is the amount of matter
Boiling point depends on volume
Chemical properties describe reactions
Density depends on size
Which of the following is a chemical change?
Cutting an apple
Water evaporating
Inflating a tire
Silver tarnishing
A chemical formula is used to represent:
A physical change
A chemical reaction
An element name
A mixture
In a chemical equation, reactants are written:
On the right side
Above the arrow
On the left side
Below the arrow
A reaction that releases heat is called:
Endothermic
Physical
Chemical
Exothermic
Which equation represents an exothermic reaction?
Reactants → Products
Reactants + energy → Products
Reactants → Products + energy
Energy → Reactants
What type of change is water evaporation?
Chemical
Nuclear
Physical
Biological
Which equation is correctly balanced?
Na + I₂ → NaI
2Na + I₂ → 2NaI
Na + I → NaI
2Na + 2I → 2NaI
Which substance would float in water?
Density = 1.42 g/cm³
Density = 2.18 g/cm³
Density = 0.65 g/cm³
Density = 1.0 g/cm³
Density remains the same when:
Mass changes
Volume changes
Size changes
All of the above
