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26 Cards in this Set

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  • Back
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Mass

The amount of matter an object has

Independent Variable

The variable which is being changed in an experiment.

Amount of sunshine, Amount of water, etc

Extensive Property

A property of a substance depending solely on the amount or numbers

Mass, Matter, Volume

Liquid

A state of matter in which particles are moving at a moderate speed; indefinite shapes but fixed volume

Scientific Method

Observations, Proposing and testing hypotheses, and developing theories

A logical, systematic approach to the solution of a scientific problem

Dependent variable

The thing which is responding to the independent variable

A flower

Volume

The amount of space occupied by an object

Intensive Property

This property focuses on the type of matter instead of the amount

Absorbancy, Density, Boiling Point, etc

Physical Change

Where properties of a material change, but not the composition

Ripping a paper

Solid

Definite shape and definite volume; particles are close together

Gas

Takes shape and volume of its container. Particles are widely spread throughout the substance

Mixture

Physical blend of two or more components

Cookies and cream

Heterogeneous mixture

A mixture where the different components are not evenly mixed throughout.

Cereal or soup

Homogeneous mixture

A mixture in which all of the components are evenly mixed

Oil or vinegar

Phase

The different components/ layers within a mixture

Solution

A homogeneous mixture

Element

Simplest form of matter with unique set of properties

O, N, H

Compound

A substance containing two or more elements chemically combined in a fixed proportion

H2O

Chemical Change

Where a change occurs and the matter has a different composition than before

Density

The ratio of the mass of an object to its volume

Accuracy

How close you are to the accepted/true value

Precision

How close your values are to each other, disregarding the true value

Accepted Value

The correct value for the measurement based on reliable references

Experimental value

The value being measured in the lab

Percent error

A measurement of the absolute value of the error divided by the accepted value

Law of conservation of mass

In any physical Change or chemical reaction, mass is conserved