Chem Test 2

Terms in this set (35)

Anything that has mass and takes up space

A substance that has uniform and unchanging composition

Physical Properties

Characteristics that can be observed or measured without changing the sample's composition

Physical Property

Physical Property

Physical Property

4 States of Matter

solid, liquid, gas, plasma

Definite shape and volume

Indefinite shape and definite volume

Indefinite Shape and indefinite volume

Two types of Physical Properties

Intensive and Extensive

Intensive properties

independent on the amount of substance present (it doesn't matter)

Extensive properties

Dependent on the amount of substance present

Chemical Properties

Ability or inability of a substance to combine with or change into one or more substances

Physical Change

Physical properties of a substance are altered without changing the composition

Solid to Liquid

liquid to solid

chemical change

One or more substances change into something new

Indications of a chemical change

Gas released, Precipitate forming, major color change, energy change

Law of Conservation of Mass

Matter cannot be created nor destroyed

Pure substances that cannot be separated into smaller substances

Consist of a combination of two or more elements chemically combined

Combination of two or more pure substances in which each substance keeps its individual chemical properties

Homogeneous Mixture

Substances are uniformly distributed; all regions are identical in their composition and properties

Heterogeneous Mixture

A mixture of substances that are not evenly distributed; individual substances remain distinct

Homogeneous Mixture

Heterogeneous Mixture

Heterogeneous Mixture

Mixture of elements that have metallic properties (homogeneous mixture of metals)

Mass per unit volume

When adding with Sig Figs, what digits are taken into consideration?

The ones after the decimal

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