Anything that has mass and takes up space

A substance that cannot be broken down into simpler substances by chemical or physical means

The smallest unit of an element that keeps the element's chemical properties

A group of atoms held together by chemical forces

A substance made up of atoms of two or more different elements

Matter that has a fixed composition and definite properties

A physical combination of two or more substances

Characteristics that can be observed without changing the identity of the substance

The temperature at which a substance changes from a solid to a liquid

The temperature at which a substance changes from a liquid to a gas

A measure of how much matter is contained in a certain volume; the ratio between mass and volume

A change that happens when one or more substances are changed entirely into new substances with different properties

The capacity of a substance to combine with another substance

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