1) All matter is made up of particles. * a) True b) False 2) Oxygen gas makes up 4/5 of the air. * a) True b) False 3) Hydrogen sulfide gas smells like rotten eggs * a) True b) False 4) Gases can take the shape of their container. * a) True b) False 5) Melting occurs when a solid is heated and it changes into a gas. * a) True b) False 6) Most solids can’t be squashed into a different shape. * a) True b) False 7) Bicarbonate of soda is an example of a liquid. * a) True b) False 8) Particles within a solid are packed very tightly and do not change their positions. * a) True b) False 9) When the steam is cooled down it changes into a liquid. * a) True b) False 10) Water vapour is the gas phase of water. * a) True b) False 11) Solid, liquid and gas are the three.…… of matter. * a) colors. b) phases. c) volumes. 12) Air is a mixture of different…. * a) solids b) liquids c) gases 13) Which of the following is a gas. * a) nitrogen. b) oil c) water 14) The gas that we need to live and we breathe it in is called… * a) hydrogen. b) oxygen. c) carbon dioxide. 15) Which of the following is not a solid … * a) chair b) vinegar c) brick 16) The process occurs when a liquid is cooled and it changes into a solid…… * a) freezing. b) evaporation. c) melting. 17) The state of matter that can change its shape as the particles are able to slide past each other is…… * a) solid. b) liquid. c) gas. 18) Water vapor is the gas phase of water. * a) False b) True

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