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Interactive Grade 4 Science Atoms & States of Matter Test — Atoms & States of Matter Practice

What happens to the particles of a substance when it is heated?

A.The particles get heavierB.The particles gain energy and move fasterC.The particles melt away and disappearD.The particles lose energy and slow down

Which of the following best explains why solids keep their shape even when you pick them up?

A.Their particles are held tightly together in fixed positionsB.Their particles move around slowly in circlesC.Their particles are spread far apart and move freelyD.Their particles are all connected by water

Which of the following best explains why a solid cannot be poured like a liquid?

A.Solid particles are too heavy to moveB.Solid particles are locked in fixed positions and cannot flow past each otherC.Solid particles have no energy at allD.Solid particles are connected by glue-like forces that disappear when heated

All matter is made up of tiny building blocks called atoms. How many atoms make up a single drop of water?

A.About 10B.About 100C.Millions and millionsD.Exactly 1000

Why is it easier to compress (squash) a gas than a liquid?

A.Gas particles are softer than liquid particlesB.There is a lot of empty space between gas particles, so they can be pushed closer togetherC.Gas particles are much heavier than liquid particlesD.Gas particles dissolve when pressure is applied

A puddle of water evaporates on a warm day. Where do the water particles go?

A.They disappear and stop existingB.They sink into the ground and become a solidC.They float up into the air as water vapour (gas)D.They turn into ice underground

Which of the following sentences CORRECTLY compares solids and liquids?

A.Both solids and liquids have particles that are spread far apartB.Solids have tightly packed particles with a fixed shape, while liquids have loosely arranged particles that can flowC.Both solids and liquids change shape to fit their containerD.Solids have particles that move freely, while liquids have particles that are fixed in place

Which of the following materials is NOT made up of atoms?

A.A glass of juiceB.A cloud in the skyC.A metal spoonD.Nothing — all of these are made of atoms

Two identical ice cubes are placed in two different containers — one is a tall thin glass and the other is a wide flat bowl. What will be TRUE once both ice cubes melt completely?

A.Both liquids will have the same shapeB.Both liquids will have the same volumeC.The liquid in the bowl will have more volumeD.The liquid in the tall glass will have more volume

10.

A scientist is studying three mystery substances. Substance A has a definite shape and volume. Substance B has a definite volume but no definite shape. Substance C has no definite shape or volume. What are Substances A, B, and C?

A.A = gas, B = liquid, C = solidB.A = liquid, B = solid, C = gasC.A = solid, B = gas, C = liquidD.A = solid, B = liquid, C = gas

11.

Which of the following materials would NOT be described as matter?

A.A rockB.The light from a torchC.Water in a pondD.The air in a tyre

12.

If you hold a solid rock in your hand, then put it into a box, what happens to its shape?

A.It changes shape to match the boxB.It slowly flows to the bottom of the boxC.It stays the same shapeD.It turns into a gas

13.

What property do solids have that liquids and gases do NOT have?

A.They are made of particlesB.They take up spaceC.They have a fixed shapeD.They can be seen

14.

Which of the following statements about liquids is TRUE?

A.Liquid particles are completely still and do not moveB.Liquid particles are spread very far apart with lots of empty spaceC.Liquid particles can move around each other but stay close togetherD.Liquid particles are locked in a fixed pattern and only vibrate

15.

Which of the following is the correct description of what happens to particles when a substance changes from a liquid to a gas?

A.The particles get bigger in sizeB.The particles slow down and move closer togetherC.The particles gain energy, move faster, and spread much further apartD.The particles join together to form bigger particles