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I think the rule is it has to be liquid solid or air.

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gracies answer  i think if it is a solid liquid or a gas it is matter

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gracies answer  i think if it is a solid liquid or a gas it is matter

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I think the  rule is every thing made up with atoms is made up of matter

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I think the rule is if it has force or if it is a solid,liquid,or gas.

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My answer is if it is a gas it is matter like air.

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my rule is if the item is a gas,liquid or solid it is matter.

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What I think the rule is that if the object takes up space, and if it has weight.

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my rule for finding matter is it has to be in the categories of solid liquid or gas

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My "rule" is there are 4 types of matter. Solid, liquid, gas and plasma.

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I think the rule is that whatever is a solid,liquid,or a gas it is matter.

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my rule is that everything that is a solid,liquid or gas its matter.

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My rule is if it is solids liquids or a gas

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i think the/my rule is that anything that is a solid,liquid and gas is made of matter.

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My rule is that if it is either made up of solids liquids or gases or if it is a solid liquid or gas also if it can be picked up by a hand

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I think the rule is that it has to take up space and it does not have to be alive

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My rule is it has to be made up of atoms. And can be picked up by the human hand.