Matter - anything that has mass and takes up space

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Molecule

A group of atoms connected by covalent bonds

Homogeneous mixture

A mixture which is evenly mixed throughout

Solution

A mixture which is evenly mixed throughout

Heterogenous mixture

A mixture which is not mixed evenly and each component retains its own properties

Compound

Atoms of more than one of elect that are chemically bonded together

Isotopes

Atoms of the same element that have different numbers of neutrons

Mixture

Composed of two or more substances that are not chemically combined

Ions

Electrically charged atom whose charge results from an atom losing or gaining electrons

Density

Measurement of the mass of an object divided by its volume

Protons

Particle that has a positive electric charge

Electrons

Particle with a negative

Neutrons

Particle without an electrical charge

Elements

Substance that is made of only one type of atom

Atomic number

The number of protons in an atom

Mass number

The number of protons plus the number of neutrons in an atom

Atoms

Tiny building blocks of matter, made up of protons,neutrons, and electrons


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