Tom R. Ellisor Elementary School

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Science Vocabulary

Classifying Matter (5.5A)
matter - anything that has mass and takes up space
mass - the amount of matter in something; measured in grams (g)
physical properties - measurable characteristics that describe the physical state of something; mass, magnetism, temperature, density, shape, volume, and conductivity
magnetism - the property of attraction to a magnet
physical state - the classification of matter as a solid, liquid, or gas
relative density - how dense something is compared with a reference material (sink/float - more dense than water = sink / less dense than water = float)
solubility - measurement of the ability of a solid to dissolve in a liquid
thermal energy - energy that can be measured by a thermometer
conductor - material that allows heat or electrical energy to easily flow through it
insulator - material through which heat or electricity does not easily flow
volume - then amount of space something takes up
 
Properties of Water (5.5B)
boiling point - the temperature at which a substance changes states from a liquid to a gas
melting point - the temperature at which a substance changes states from a solid to a liquid
freezing point - the temperature at which a substance changes states from a liquid to a solid
condensation - physical change in matter from a gas to a liquid
evaporation - physical change in matter from a liquid to a gas
BOILING POINT OF WATER = 100 DEGREES CELSIUS
FREEZING/MELTING POINT OF WATER = 0 DEGREES CELSIUS
 
Mixtures and Solutions (5.5C/D)
 
substance - a single part of a mixture or solution
mixture - a combination of two or more substances where each keeps its own properties and can easily be separated
physical change - make different without changing what the material is made of, such as cutting, folding, or melting
solution - a particular type of mixture where one substance dissolves in another; molecules spread evenly throughout the other substance; 
dissolve - spread out uniformly in a liquid
soluble - any substance that can dissolve in another
insoluble - a substance that cannot dissolve