Helium, a very light gas used to make floating party balloons. Also used in large airships, a smelly gas, Carbon Dioxide, a gas used in soft drinks to make bubbles. It is also used in Fire extinguishers., plants use carbon dioxide, carbon dioxide smells bad, natural gas (methane), it is used in stoves and heaters because it gives fire when it meets a spark., humans need it to stay alive., neon, is used in neon tubes because it glows., plants use it for photosynthesis, anaesthetic gas, it is used by doctors and dentists to help you feel less pain and/ or make you fall asleep., it gives a fire when it meets a spark, air, is a mixture of gases, it is a pure gas, astronauts use:, compressed air, carbon dioxide, fire man use ________________ to put out fires., Carbon dioxide, Anaesthetic gas, doctors use ________________ to put you to sleep, neon, anaesthetic gas, people in a caravan use___________in their heaters., compressed air, Compressed methane, the molecules in a solid are, very apart, a bit apart, packed tightly together, the molecules in a liquid are, a bit apart, packed tightly together, the gas that is used to fill floating party balloons is, carbon dioxide, helium, the gas used to put out fires, carbon dioxide, methane, the gas used for cooking, neon, methane, the gas that glows when electricity passes through, neon, air, to measure temperature you need a, test tube, thermometer, a powder, solid, liquid, a solid, has a fixed shape, changes shape, the gas that produces fires, neon, air, a liquid, changes shape, according to it's container, has no shape, a gas, has no shape, it's particles are far apart, has a fixed shape, it's particles are tightly packed, the state of a substance depends on it's, temperature, energy, ice will turn into liquid, if you heat it, if you cool it, water vapour will turn into liquid, if you cool it, if you heat it, water will turn into vapour, if you cool it, if you heat it, temperature is, how hot or cold something is, how smelly something is, temperature is measured in, fahrenheit or celsius, centimeters or metres

science topic 1

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