Vocabulary Review Test 2 (Science)

31 terms by studymore234

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Physical Change

a change that alters the form or appearance of a material but does not make the material into a different substance

Chemical Bond

the force of attraction that holds two atoms together

Indicator

a compound that changes color in the presence of an acid or a base

Heterogenous Mixture

you can usually see the different parts and they can easily be separated out

Homogeneous Mixture

evenly mixed that you can't see the different parts, difficult to separate the parts

Solution

a mixture containing a solvent and at least one solute that has the same properties throughout; a mixture in which one substance is dissolved in another

Amorphous Solid

a solid made up particles that are not arranged in a regular pattern

Crystalline Solid

a solid that is made up of crystals in which particles are arranged in a regular repeating pattern

Gas

a state of matter with no definite shape or volume

Liquid

a state of matter that has no definite shape but has a definite volume

Polar Bond

a covalent bond in which electrons are shared unequally

Pressure

the force pushing on a surface divided by the area of that surface

Solid

a state of matter that has a definite shape and a definite volume

Surface Tension

the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together; causes the surface to act as if it has a thin skin

Viscosity

a liquid's resistance to flowing

Boiling Point

the temperature at which a liquid boils

Sublimation

the change in state from a solid directly to a gas without passing through the liquid state

Condensation

the change in state from a gas to a liquid

Freezing

the change in state from a liquid to a solid

Melting

the change in state from a solid to a liquid

Melting Point

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

Vaporization

the change of state from a liquid to a gas

Freezing Point

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

Mixture

two or more substances that are together in the same place but their atoms are not chemically bonded

Boiling

vaporization that occurs at and below the surface of a liquid

Solute

the part of a solution that is dissolved by a solvent

Solvent

the part of a solution that is usually present in the largest amount and dissolves a solute

reactants

anything that you put into rxn (reaction)

products

result of the reaction

Physical Bond

o

Chemical Change

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