Materials and Matter
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
States of Matter: Solids, Liquids, and Gases
SubtopicStates of Matter: Solids, Liquids, and Gases under Materials and Matter for Grade 4 IB.
Preview questions (no answers)
- 1.
What is the solid state of water called?
A.Vapor
B.Ice
C.Rain
D.Mist
- 2.
Which state of matter will flow and settle at the bottom of a container due to gravity?
A.Liquid
B.Gas
C.Vapor
D.Smoke
- 3.
Which of these is a solid item often used as a toy?
A.Air
B.Water
C.Fruit juice
D.A plastic building block
- 4.
What happens to the particles in a solid when it is heated enough to melt?
A.They stop moving completely
B.They get closer together
C.They start to move and slide past each other
D.They turn into metal
- 5.
What property of matter is measured in grams (g) or kilograms (kg)?
A.Volume
B.Length
C.Mass
D.Temperature
- 6.
What happens to the speed of particles in a piece of iron as it is heated up?
A.The speed decreases.
B.The speed stays the same.
C.The speed increases.
D.The particles stop moving.
- 7.
Which of these materials is most likely to be a solid at C?
A.Ice
B.Water
C.Steel
D.Oxygen
- 8.
What is the major difference between a solid and a gas in terms of their physical properties?
A.Solids have a definite shape and volume; gases have neither.
B.Solids flow to take the shape of their container; gases do not.
C.Solids can be compressed easily; gases cannot.
D.Solids have particles that are far apart; gases have particles that are close.
- 9.
A student notices that on a very cold winter day, the air pressure in their car tires is lower than it was in the summer. Why?
A.The particles slowed down and hit the tire walls with less force.
B.The air particles shrank in size because of the cold.
C.Some of the air particles leaked out through the cold rubber.
D.The air particles turned into solid ice inside the tire.
- 10.
If you could see the particles in a piece of copper wire, how would they appear?
A.Vibrating in place in a very neat, organized pattern.
B.Zipping around randomly at high speeds.
C.Tumbling over each other like marbles in a bag.
D.Expanding and contracting to fill the entire room.
Download the worksheet for Materials and Matter - States of Matter: Solids, Liquids, and Gases to practice offline. It includes additional chapter-level practice questions.
Properties of Materials and Their Uses
SubtopicProperties of Materials and Their Uses under Materials and Matter for Grade 4 IB.
Preview questions (no answers)
- 1.
Which property is most important for a material used to make a life jacket?
A.It must be heavy
B.It must be able to float
C.It must be transparent
D.It must be magnetic
- 2.
Which of these materials is natural and comes from the ground?
A.Nylon
B.Stone
C.Plastic
D.Glass
- 3.
Which material is often used for electrical plugs because it does not conduct electricity?
A.Copper
B.Silver
C.Plastic
D.Gold
- 4.
What happens to liquid water if it is cooled to ?
A.It turns into a gas
B.It stays as a liquid
C.It turns into a solid
D.It disappears
- 5.
What property makes ceramic a good material for coffee mugs?
A.It is a good thermal insulator
B.It is very flexible
C.It is magnetic
D.It is transparent
- 6.
Which material is often used as an insulator in the walls of houses to keep them warm?
A.Copper plates
B.Fiberglass
C.Steel beams
D.Glass panes
- 7.
What is the main reason that helium is used in party balloons?
A.It is very colorful
B.It is less dense than air
C.It is a liquid at room temperature
D.It is a good conductor of heat
- 8.
A factory needs to choose a material for a conveyor belt that carries hot items. The belt must be able to bend around rollers and must not melt. Which material is best?
A.A low-melting-point plastic
B.A heat-resistant, flexible synthetic rubber
C.A rigid ceramic tile
D.A thin sheet of lead
- 9.
An object sinks in water but floats in a very salty solution (brine). What is the most likely reason?
A.The object became lighter when placed in salt water
B.The salt water is denser than the object, but pure water is less dense than the object
C.The salt in the water reacted with the object to make it float
D.The object dissolved slightly in the salt water
- 10.
Which of these is a property of a gas but not a property of a liquid?
A.It has a definite volume
B.It can flow from one container to another
C.It can be easily compressed into a smaller volume
D.It takes the shape of its container
Download the worksheet for Materials and Matter - Properties of Materials and Their Uses to practice offline. It includes additional chapter-level practice questions.
Reversible and Irreversible Changes
SubtopicReversible and Irreversible Changes under Materials and Matter for Grade 4 IB.
Preview questions (no answers)
- 1.
Which of these is a way to reverse the change of melting silver?
A.Heating it more
B.Adding water
C.Cooling it down
D.Stirring it
- 2.
When we say a change is 'irreversible', what do we mean?
A.It can be turned back easily
B.It cannot be turned back to how it was before
C.It only happens when things are cold
D.It happens very quickly
- 3.
What kind of change is occurring when you use a pencil and the lead leaves marks on the paper?
A.A reversible change (you can erase it)
B.An irreversible change (the lead is gone)
C.A melting change
D.A freezing change
- 4.
Which of these substances will NOT melt when heated on a stove?
A.Butter
B.Ice
C.A wooden spoon
D.Chocolate
- 5.
If you place a wet sponge on a table and it becomes dry after a few hours, what has happened to the water?
A.It was destroyed by the table
B.It evaporated, which is a reversible change of state
C.It turned into a new material that smells like a sponge
D.It underwent an irreversible change
- 6.
Why is mixing flour and water to make dough usually considered an irreversible change in cooking once it is baked?
A.Because you can no longer separate the flour and water
B.Because the dough is too sticky
C.Because the heat has changed the chemical structure of the ingredients
D.Because the dough has changed its color
- 7.
What happens when steam from a boiling kettle hits a cold kitchen tile?
A.It undergoes an irreversible change into tile
B.It condenses into liquid water, which is a reversible change
C.It turns into a solid powder
D.It disappears through a chemical reaction
- 8.
Which of these experiments would best demonstrate the difference between a reversible and an irreversible change using only heat?
A.Heating a bowl of water and heating a bowl of soup.
B.Heating a piece of ice and heating a piece of paper.
C.Heating a metal spoon and heating a plastic spoon.
D.Heating a salt solution and heating a sugar solution.
- 9.
In the process of making 'Slime' (mixing glue and borax solution), the two liquids turn into a stretchy solid-like material. Why is this usually classified as a chemical change?
A.Because the glue changed its color to white.
B.Because the two substances have reacted to form new cross-linked polymer bonds.
C.Because the slime cannot be poured back into the glue bottle.
D.Because the slime smells different than the glue.
- 10.
Why does a piece of bread become hard and stale if left out, but becomes soft again if steamed? Is staleness a chemical or physical change?
A.It is a chemical change because it cannot be reversed.
B.It is a physical change involving the movement of water molecules within the bread structure.
C.It is an irreversible change caused by the bread reacting with oxygen.
D.It is a state change from solid to gas.
Download the worksheet for Materials and Matter - Reversible and Irreversible Changes to practice offline. It includes additional chapter-level practice questions.
Mixing and Separating Substances
SubtopicMixing and Separating Substances under Materials and Matter for Grade 4 IB.
Preview questions (no answers)
- 1.
Which process uses heat to separate a solid that has dissolved in a liquid?
A.Sieving
B.Filtration
C.Evaporation
D.Decanting
- 2.
Which of the following is an example of a solid-solid mixture?
A.Saltwater
B.A bowl of mixed coins
C.Milkshake
D.Lemonade
- 3.
If you are separating a mixture by 'decanting', you are:
A.Using a magnet
B.Boiling the liquid away
C.Carefully pouring the top liquid into another container
D.Crushing the solid into smaller pieces
- 4.
In a saltwater solution, the water is the ________.
A.Solute
B.Solvent
C.Residue
D.Filtrate
- 5.
Which of these is a common mixture found in nature that contains solids, liquids, and gases?
A.A piece of pure iron
B.Distilled water
C.Soil
D.A vacuum
- 6.
If you stir a lot of salt into a small glass of water until no more salt can dissolve, the solution has become:
A.Dilute
B.Transparent
C.Saturated
D.Evaporated
- 7.
Which of the following mixtures can be separated by adding water and then filtering?
A.Salt and sugar
B.Sand and salt
C.Oil and water
D.Iron and steel
- 8.
A scientist has a mixture of two different liquids: Liquid X (boiling point ) and Liquid Y (boiling point ). They heat the mixture to a constant temperature of in the apparatus shown below. Based on the boiling points, what will be the result of this process?
A.Pure Liquid X will be collected in the Recovery Beaker.
B.Pure Liquid Y will be collected in the Recovery Beaker.
C.A mixture of both Liquid X and Liquid Y will be collected in the beaker.
D.Neither liquid will evaporate, so the Recovery Beaker will remain empty.
- 9.
A student is separating a complex mixture of plastic beads, glass beads, and salt. They follow the multi-step process shown in the diagram. After adding water in Step 1, which specific physical property is the student primarily using at Step 2 to catch the glass beads in the filter while allowing the salt solution to pass through?
A.Magnetism
B.Density
C.Particle size
D.Solubility
- 10.
If you mix of salt into of water and the salt dissolves, what has happened to the mass of the salt?
A.It has decreased as the salt broke down
B.It has stayed the same, but it is now spread out in the water
C.It has increased because it absorbed water
D.The mass is gone because salt in water has no mass
Download the worksheet for Materials and Matter - Mixing and Separating Substances to practice offline. It includes additional chapter-level practice questions.