WorksheetsScience Quiz: End of Year revision
Total questions: 36
Worksheet time: 18mins
Which of the following is the smallest unit of matter?
Atom
Molecule
Compound
Element
What is the main function of the periodic table?
To show the order of chemical reactions
To organise elements by their properties
To list all known compounds
To display the structure of atoms
Which of the following is a polymer?
Water
Polyethene
Oxygen
Sodium chloride
What is the process called when a substance reacts with oxygen to produce heat and light?
Decomposition
Combustion
Insulation
Conservation
Which organ system is responsible for gaseous exchange in humans?
Digestive system
Respiratory system
Circulatory system
Nervous system
Which of the following is a risk associated with smoking?
Improved lung function
Increased risk of cancer
Stronger bones
Better digestion
Which of the following is NOT a benefit of scientific investigation?
Discovering new medicines
Improving technology
Increasing pollution
Understanding the natural world
What is the main function of DNA?
To provide energy
To store genetic information
To digest food
To insulate the body
Which of the following is an example of an endothermic reaction?
Burning wood
Melting ice
Combustion of petrol
Rusting of iron
What is biodiversity?
The number of atoms in a molecule
The variety of living organisms in an area
The process of natural selection
The amount of oxygen in the air
Which of the following best describes a compound?
A substance made of only one type of atom
A mixture of different elements
A substance made of two or more elements chemically combined
A large molecule made of repeating units
What is the main purpose of insulation in a house?
To let heat escape
To keep heat inside
To increase radiation
To allow more light in
Which of the following is a frictional force?
Gravity
Air resistance
Magnetism
Nuclear force
What is the unit of temperature commonly used in Great Britain?
Fahrenheit
Kelvin
Celsius
Rankine
Which of the following is an example of work being done?
Holding a book still
Pushing a trolley across the floor
Sitting on a chair
Standing still
What is the law of conservation of mass?
Mass can be created
Mass can be destroyed
Mass is neither created nor destroyed in a chemical reaction
Mass always increases in a reaction
Which of the following is a benefit of biodiversity?
Increased risk of extinction
More stable ecosystems
Fewer food sources
Less variety in habitats
What is the main cause of extinction?
Increased biodiversity
Loss of habitat
More food sources
Improved health
Which of the following is a source of evidence in a scientific investigation?
Personal opinion
Experimental data
Guesswork
Hearsay
What is the main function of the digestive system?
To exchange gases
To break down food and absorb nutrients
To pump blood
To control movement
Which of the following is an example of a force?
Mass
Pressure
Gravity
Temperature
What is the formula for pressure?
Pressure = Force × Area
Pressure = Force ÷ Area
Pressure = Area ÷ Force
Pressure = Mass × Acceleration
Which of the following is an example of a moment?
Pushing a door at its hinge
Pulling a rope straight
Turning a spanner
Lifting a box straight up
What is the main difference between an element and a compound?
Elements are made of molecules, compounds are not
Elements contain only one type of atom, compounds contain two or more types
Compounds are found on the periodic table, elements are not
Elements are always gases, compounds are always solids
Which of the following is an example of a decomposition reaction?
Water freezing
Hydrogen peroxide breaking down into water and oxygen
Iron rusting
Burning coal
What is the main risk of taking illegal drugs?
Improved concentration
Addiction and health problems
Better sleep
Stronger muscles
Which of the following is a benefit of planning investigations carefully?
More accurate results
Increased risk of error
Less reliable data
More confusion
What is the main function of natural selection?
To increase extinction rates
To help species adapt to their environment
To reduce biodiversity
To create new elements
Which of the following best describes stress in physics?
The amount of force per unit area
The total force applied
The speed of an object
The temperature of a material
Which of the following is an exothermic reaction?
Photosynthesis
Combustion of wood
Melting ice
Evaporation of water
Which of the following is a characteristic of a physical change?
Energy is always released
It cannot be reversed
No new substance is formed
Atoms are rearranged into new compounds
What is the main function of the respiratory system?
To digest food
To exchange gases like oxygen and carbon dioxide
To circulate blood
To control movement
Which of the following best describes an element?
A substance that cannot be broken down into simpler substances by chemical means
A compound that contains carbon
A mixture of two or more substances
A substance made from different types of molecules
Which of the following is a reason why biodiversity is important for ecosystems?
It limits food availability
It helps maintain balance and resilience
It reduces the number of species
It causes more pollution
What do all compounds have in common?
They are made of only one type of atom
They are mixtures of elements and compounds
They consist of two or more elements chemically bonded
They are always gases at room temperature
Which of the following best explains why the periodic table is useful to scientists?
It shows the number of atoms in a molecule
It describes the process of digestion
It lists all possible chemical reactions
It predicts the properties of elements
