Materials and Matter
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
States of Matter (Solid, Liquid, Gas)
SubtopicStates of Matter (Solid, Liquid, Gas) under Materials and Matter for Grade 5 IB.
Preview questions (no answers)
- 1.
Which of these substances does NOT have a definite volume?
A.A brick
B.Water in a bottle
C.Helium in a tank
D.A gold ring
- 2.
When steam touches a cold mirror in the bathroom, it turns into drops of water. What state change is this?
A.Solid to liquid
B.Liquid to gas
C.Gas to liquid
D.Liquid to solid
- 3.
What happens to the speed of particles in a solid as it is heated?
A.They slow down.
B.They start moving/vibrating faster.
C.They stop moving.
D.They stay the same.
- 4.
Which of the following will stay the same shape even if you put it in a different container?
A.Milk
B.Air
C.An iron nail
D.Apple juice
- 5.
A student performs an experiment by placing a sample of liquid water into a strong metal cylinder and pushing down on a tight-fitting piston. Despite applying a large amount of force, the student observes that the volume of the water does not decrease. Based on the particle model of matter, why is it nearly impossible to compress a liquid?
A.The particles in a liquid are spread very far apart with large gaps between them.
B.The particles in a liquid are already very close together with almost no empty space between them.
C.The particles in a liquid have lost all their energy and stopped moving completely.
D.The particles in a liquid turn into solid particles when they are under high pressure.
- 6.
Which of these is an example of a physical change of state?
A.Baking a cake in an oven.
B.Burning a piece of wood.
C.A puddle of water drying up in the sun.
D.An iron nail rusting in the rain.
- 7.
In a liquid, the particles are described as being 'disordered.' What does this mean?
A.The particles are not arranged in a regular pattern.
B.The particles are broken into pieces.
C.The particles are all moving in the same direction.
D.The particles do not touch each other.
- 8.
During a phase change from liquid to solid, what happens to the average kinetic energy of the particles?
A.It increases significantly.
B.It decreases until the phase change is complete.
C.It remains constant because the temperature does not change during the phase change.
D.It doubles as the particles bond.
- 9.
Which of the following describes the behavior of gas particles according to the Kinetic Molecular Theory?
A.They move in curved paths like planets.
B.They are always attracted to the bottom of the container due to gravity.
C.They are in constant, random, straight-line motion.
D.They only move when the container is shaken.
- 10.
In the diagram provided, if the temperature is increased, which direction will the particles move more toward?
A.Toward the Solid state
B.Toward the Liquid state then Gas state
C.They will stay in the same state
D.They will disappear
Download the worksheet for Materials and Matter - States of Matter (Solid, Liquid, Gas) to practice offline. It includes additional chapter-level practice questions.
Reversible and Irreversible Changes
SubtopicReversible and Irreversible Changes under Materials and Matter for Grade 5 IB.
Preview questions (no answers)
- 1.
What is the result of mixing flour and water and then baking it in an oven?
A.A reversible mixture
B.An irreversible change that creates bread
C.A simple state change like melting
D.Nothing, they stay as flour and water
- 2.
If you use heat to turn a solid into a liquid, but the liquid cannot be turned back into a solid by cooling, the change was:
A.Reversible
B.Irreversible
C.A state change
D.A mixture
- 3.
Which of these is an irreversible change found in nature?
A.Water evaporating from a lake
B.An apple rotting on the ground
C.Snow melting on a mountain
D.Dew forming on grass
- 4.
Why is dissolving salt in water considered a physical change?
A.Because the salt is gone forever
B.Because the water turns into salt
C.Because no new substance is formed and you can get the salt back
D.Because the water changed color
- 5.
Why is the formation of dew on grass in the morning a reversible change?
A.Because the grass absorbs the water.
B.Because the dew can evaporate back into the air when the sun warms it.
C.Because dew is a new substance formed from oxygen.
D.Because it only happens once a day.
- 6.
When you put an effervescent tablet in water, it fizzes and eventually disappears. Why can't you get the tablet back by evaporating the water?
A.The tablet has simply dissolved like salt.
B.The tablet has reacted with water to form new gases and substances.
C.The water has become too heavy to evaporate.
D.The tablet was made of water and just joined the rest of the liquid.
- 7.
What kind of change is occurring when wood is chopped into smaller pieces for a fireplace?
A.An irreversible chemical change.
B.A reversible physical change.
C.An irreversible physical change.
D.A change of state from solid to liquid.
- 8.
Compare the 'drying' of wet clothes on a line to the 'drying' of a coat of paint on a wall. Which statement is accurate?
A.Both are reversible physical changes involving the evaporation of water.
B.Clothes drying is a physical change (evaporation), while paint drying involves a chemical change where the liquid turns into a solid polymer.
C.Clothes drying is a chemical change, while paint drying is a physical change of state.
D.Both are irreversible chemical changes because the liquid cannot be recovered from the air.
- 9.
Which observation during an experiment is the LEAST reliable indicator that an irreversible chemical change has occurred?
A.The production of a strong, new odor.
B.A change in the state of matter from liquid to gas (bubbles) without boiling.
C.The substance changing from a solid to a liquid upon heating.
D.A permanent change in color that cannot be explained by mixing colors.
- 10.
A student argues that when a balloon pops, it is a chemical change because the balloon is 'destroyed.' How would a scientist correct this?
A.It is a chemical change because the air inside was released into the atmosphere.
B.It is a physical change because the rubber molecules are still the same; they are just in smaller, torn pieces.
C.It is a chemical change because the sound of the pop produced energy.
D.It is a physical change because you can use tape to make the balloon whole again.
Download the worksheet for Materials and Matter - Reversible and Irreversible Changes 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 5 IB.
Preview questions (no answers)
- 1.
Why is ceramic often used for making floor tiles in bathrooms?
A.It is very soft and absorbs water.
B.It is hard, durable, and water-resistant.
C.It is as flexible as rubber.
D.It is a gas at room temperature.
- 2.
Which of these materials is a natural material rather than a synthetic (man-made) one?
A.Nylon
B.Polyester
C.Wood
D.Plastic
- 3.
Which property is most important for a material used to make a spring?
A.Elasticity
B.Transparency
C.Solubility
D.Combustibility
- 4.
Why are some curtains made of thick, dark fabric?
A.To let as much light as possible into the room.
B.To make the room brighter.
C.To block light and make the room dark (opacity).
D.To allow people to see through the window.
- 5.
Which of the following is a non-magnetic metal?
A.Iron
B.Steel
C.Aluminum
D.Nickel
- 6.
What happens to the particles of water as it is heated from to ?
A.They slow down and move closer.
B.They gain energy and move faster.
C.They turn into hydrogen and oxygen atoms.
D.They shrink in size.
- 7.
Which of the following substances is generally considered the 'universal solvent' because it dissolves so many different materials?
A.Oil
B.Alcohol
C.Water
D.Vinegar
- 8.
In a science experiment, a student finds that of hot water can dissolve more sugar than of cold water. This proves that:
A.Solubility of solids usually increases with an increase in temperature.
B.Hot water is more acidic than cold water.
C.Sugar changes its chemical identity when it gets hot.
D.Cold water is denser, so there is no room for sugar molecules.
- 9.
Which material would be the best choice for making the handle of a frying pan to ensure safety while cooking?
A.A thermosetting plastic with low thermal conductivity.
B.A polished silver alloy with high thermal conductivity.
C.A thin strip of aluminum for lightweight handling.
D.A piece of lead because of its high melting point.
- 10.
If you observe steam rising from a kettle and then forming water droplets on a cold window, which sequence of state changes have you witnessed?
A.Evaporation followed by condensation.
B.Melting followed by freezing.
C.Sublimation followed by deposition.
D.Condensation followed by evaporation.
Download the worksheet for Materials and Matter - Properties of Materials and Their Uses to practice offline. It includes additional chapter-level practice questions.
Solutions, Suspensions, and Mixtures
SubtopicSolutions, Suspensions, and Mixtures under Materials and Matter for Grade 5 IB.
Preview questions (no answers)
- 1.
When we mix things together but no new substance is formed, we have created a...
A.Mixture
B.Compound
C.Element
D.Atom
- 2.
Which of these describes milk?
A.A simple solution
B.A colloid (a mixture that doesn't settle easily)
C.A mixture of solids only
D.A pure element
- 3.
What happens if you keep adding salt to a small glass of water without stopping?
A.The water will turn into gold
B.Eventually, the salt will stop dissolving and sink to the bottom
C.The salt will all evaporate
D.The water will disappear
- 4.
Which of these can be separated by using the process of evaporation?
A.A mixture of sand and rocks
B.A mixture of salt and water
C.A mixture of iron and sulfur
D.A mixture of oil and water
- 5.
Which of the following describes a 'pure substance' rather than a mixture?
A.Salt dissolved in water
B.Granite rock with different colored flecks
C.Distilled water ()
D.A bowl of trail mix
- 6.
Which separation technique relies on the different boiling points of the substances in a mixture?
A.Filtration
B.Magnetism
C.Distillation
D.Sieving
- 7.
A mixture is created by combining two or more substances. Which statement about the mass of the mixture is always true?
A.The mass of the mixture is less than the mass of the parts
B.The mass of the mixture is equal to the sum of the masses of its parts
C.The mass of the mixture is greater than the sum of the masses of its parts
D.The mass changes depending on how fast you stir
- 8.
Which of the following best describes the difference between a 'dilute' solution and a 'concentrated' solution?
A.A dilute solution has more solute per unit of solvent.
B.A concentrated solution has more solute per unit of solvent.
C.A dilute solution is always hot.
D.A concentrated solution is always a suspension.
- 9.
A student adds a small crystal of salt to a clear liquid. The crystal does not dissolve and instead falls to the bottom. A few minutes later, more crystals start forming around it. What was the original liquid?
A.An unsaturated solution
B.A saturated solution
C.A supersaturated solution
D.Pure solvent
- 10.
Which of the following is an example of a solid solution?
A.A mixture of sand and gravel
B.An alloy like brass (copper and zinc)
C.A bowl of cereal and milk
D.A granite rock
Download the worksheet for Materials and Matter - Solutions, Suspensions, and Mixtures to practice offline. It includes additional chapter-level practice questions.
Chemical vs Physical Changes
SubtopicChemical vs Physical Changes under Materials and Matter for Grade 5 IB.
Preview questions (no answers)
- 1.
What happens to the weight of a piece of paper if you tear it into 100 small pieces?
A.The total weight stays the same because it is a physical change.
B.The weight increases because there are more pieces.
C.The weight decreases because the paper is broken.
D.The weight changes because it is a chemical change.
- 2.
If you mix vinegar and baking soda in a bottle and put a balloon over the top, the balloon inflates. This is because:
A.The vinegar is boiling.
B.A physical change is moving the air.
C.A chemical change produced a new gas.
D.The baking soda is evaporating.
- 3.
Which of the following describes a chemical change involving a bicycle?
A.Painting the frame red
B.The chain becoming rusty
C.Inflating the tires
D.Adjusting the seat height
- 4.
When you put a cold glass of water outside on a hot day and droplets form on the outside, this is:
A.A chemical change
B.A physical change (condensation)
C.The glass leaking water
D.A new substance being created
- 5.
A student mixes two clear liquids together in a beaker. After a few seconds, they observe a white solid, known as a precipitate, forming and settling at the bottom of the container. What does this observation tell us about the change that occurred?
A.It is a physical change because the liquid simply changed its state of matter.
B.It is a physical change because the mass of the substances did not change.
C.It is a chemical change because a new substance with different properties was formed.
D.It is a chemical change because two different liquids were combined into a mixture.
- 6.
Which of these is an example of a chemical change occurring in the natural environment?
A.A river freezing over in the winter.
B.A large rock breaking into smaller pebbles.
C.Leaves changing color in the autumn due to chemical shifts.
D.Water evaporating from a lake on a hot day.
- 7.
What happens during a physical change like crushing a soda can?
A.The metal changes into a new material.
B.Only the shape of the metal changes.
C.Heat is released from a chemical reaction.
D.The metal becomes a liquid state.
- 8.
A scientist wants to determine if a new 'super-glue' drying is a chemical or physical change. They find that the glue creates a new polymer structure that cannot be dissolved by its original solvent. This suggests:
A.It is a physical change because it just got harder.
B.It is a chemical change because a new substance (the polymer) with new properties was formed.
C.It is a physical change because the mass of the glue stayed the same.
D.It is a chemical change because the glue changed color from clear to white.
- 9.
When vinegar (acetic acid) reacts with a sea shell (calcium carbonate), the shell slowly disappears and bubbles form. What is happening to the calcium carbonate?
A.It is melting into the vinegar.
B.It is being chemically converted into new substances like calcium acetate and carbon dioxide gas.
C.It is being physically broken into microscopic pieces by the liquid.
D.It is being evaporated by the acid.
- 10.
Which of the following is an example of a chemical change occurring in the Earth's atmosphere?
A.Water vapor cooling down to form clouds.
B.Wind moving air from high pressure to low pressure.
C.Lightning causing nitrogen and oxygen to react and form nitrogen oxides.
D.Snow melting on the peaks of high mountains.
Download the worksheet for Materials and Matter - Chemical vs Physical Changes to practice offline. It includes additional chapter-level practice questions.