Chemistry Review 1

25 terms by luvxox4evax3 

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vapor

gaseous state of something that is usually a gas/solid (steam)

gas

Matter that glows to conform to shape of container and fills entire volume. Easily compressible.

matter

Pure substances and mixtures are all ________.

mixtures

________ retain individual properties of the components.

mixtures

EX: Saltwater = still salty and watery

heterogeneous

Looks different throughout, layered, see individual components.

heterogeneous

EX: Sand and water

homogeneous

Looks the same throughout and cannot see individual components.

homogeneous

Also called solutions.

aqueous

_________ solutions contain water.

alloy

Solid + Solid = ?

alloy

Mixture of 2 or more metals.

Separating mixtures

Physical, settling, chromotography, filtration, distillation, different melting points, magnetic properties.

settling

Let the gravity separate mixtures for you (EX: density)

distillation

Separation based on boiling point differences in which substances with lower boiling point vaporizes first.

element

A pure substance that CANNOT be broken down by chemical or physical means.

compound

A pure substance by CAN be chemically broken down.

solution

a homogeneous mixture

heterogeneous

If ___________, must be a mixture.

made

Compounds are always ________ the same.
(EX: Water- H2O)

mass

Compounds always have the same _______.

precision

How reproductable (repeatable), or how constantly that measurement is made.

range

Smaller _______ = more precise.

accuracy

How close to the correct (accepted) value.

average

To compare accuracy, compare the ________ to the accepted value.

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