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20 terms

Foundations of Chemistry

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Matter
Anything that has mass and takes up space
Atom
A small particle that is a building block of matter
Electron
Negatively charged particles that surround the nucleus of an atom
Proton
Positively charged particle that is in the nucleus of an atom
Neutron
Neutrally charged particle that is in the nucleus of an atom
Substance
Matter with a composition that is always the same
Element
A substance that consists of just one type of atom
Compound
A type of substance containing atoms of two or more different elemetnts chemically bonded together
Mixture
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
Dissolve
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
Mass
The amount of matter in an object
Density
The mass per unit volume of a substance
Solubility
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
Concentration
The amount of substance in a certain volume