Classifying materials

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19 Terms

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Name the 3 states of matter

Solid, liquid, gas

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What is the name of a solid changing to a liquid?

Melting

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What is the name of a gas turning to a liquid?

Condensation

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Who put forward the modern atomic model in 1913?

Niels Bohr and Ernest Rutherford

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What is an element?

A substance which only contains one type of atom. The atoms are the same as each other, each atom is different from each other and has different properties.

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What is a molecule?

2 or more atoms held together by a chemical bond.

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Where are electrons found in an atom?

Orbiting the nucleus in shells

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What is the charge of a proton?

Positive charge +1

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Where in the atom are neutrons found?

In the nucleus.

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Where in

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