Matter - Solids

 1.  mass – the amount of matter in a given object.

2.  atom – the smallest part of an element.

3.  matter – anything that has mass and takes up space.

4.  element – the basic building block of matter; there are 103 known elements.

5.  solid – a state of matter that has a shape, a certain size, and may feel hard.

6.  melting point – the temperature at which a solid becomes a liquid.

7.  weight – the pull of gravity on a given object; the degree of mass.

8.  property – a quality of something; describes how an object looks, feels, or acts.

9. density – how tightly the matter of an object is packed together. Example:

                  density of iron is greater than density of wood.

10. gravity – the invisible force that pulls objects toward Earth.

 

 

Matter - Liquids

 1.  boiling point – the temperature at which a liquid becomes a gas.

2.  liquid – matter that takes the shape of its container and is hard to compress;

                 between the solid and gas phase.

3.  viscosity – the resistance of a liquid to flow. Example: honey flows slowly.

4.  capacity – refers to the measuring of a liquid’s mass.

5.  evaporation – change that occurs when a liquid gains enough energy to change to

                           a gas.

6.  volume – the amount of space a liquid occupies.

7.  mixture – made up of two or more kinds of matter that are placed together

                     but can be easily separated.

8.  solution – made up of two or more kinds of matter that form a new substance

                    and cannot be easily separated.

9.  dissolve – to add a solid to a liquid so that the solid disappears. Example – sugar.

10. solubility – how easily a solid will dissolve.

 

Matter – Gases

 1.  condensation – change that occurs when vapor, or gas, becomes a liquid.

2.  gas – a state of matter that is easy to compress and evenly fills out a

              container of any size or shape.

3.  vapor – another word for gas; describes gases that are usually found as liquids,

                 such as water.

4.  plasma – considered the fourth state of matter; similar to gas but found in

                   very hot temperatures, like stars.

5.  reversible change – when matter can be changed back to an earlier state.

6.  inertia – an ability matter has to resist change.

7.  irreversible change – when matter cannot be changed back to an earlier state.

8.  state of matter – refers to the three forms of matter: solids, liquids, gases.

9.  physical change – makes something look different.

10. chemical change – causes a whole new material to form.