solid, liquid and gas - What are the three states of matter?, The amount of space an object takes up. - What is volume?, The meassure of how much matter makes up that object. - What is mass?, When a liquid turns into a solid. - What is freezing?, When the particles of gas meet something that is colder and turn into liquid again. - What is condensation?, It contains nitrogen, oxygen, carbon-dioxide and some other gases. - What different gases does air contain?, When you put things together and stir them, but the elements do not change chemically. - What is a mixture?, At the end of the reaction, one kind of matter will change into another kind; these changes cannot be reversed. - What does a chemical change mean?, The top fertile layer of the ground. - What is soil?, Oxygen is needed. - Which gas do you need for burning, rust and tarnish?,

Unit 3 - Revision (matching)

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