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Anything that has mass and takes up space


A small particle that is a building block of matter


Negatively charged particles that surround the nucleus of an atom


Positively charged particle that is in the nucleus of an atom


Neutrally charged particle that is in the nucleus of an atom


Matter with a composition that is always the same


A substance that consists of just one type of atom


A type of substance containing atoms of two or more different elemetnts chemically bonded together


Matter that can vary in composition

Heterogeneous Mixture

A type of mixture in which the individual substances are not evenly mixed

Homogeneous Mixture

A type of mixture in which the individual substances are evenly mixed


To form a solution by mixing evenly

Physical Property

A characteristic of matter that you can observe or measure without changing the identity of the matter


The amount of matter in an object


The mass per unit volume of a substance


The ability of one substance to dissolve in another

Physical Change

A change in size, shape, form, or state of matter in which the matter's identity stays the same

Chemical Property

A characteristic of matter that can be observed as it changes to a different type of matter

Chemical Change

A change in matter in which the substances that make up the matter change into other substances with new physical and chemical properties


The amount of substance in a certain volume

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