States of Matter
Terms and Definitions
Students should know the following terms and definitions:
solid - state of matter with particles that have a definite shape and a definite volume
liquid, - state of matter with particles that have a definite volume but no definite shape
gas - state of matter with particles that have no definite shape and no definite volume
matter - anything that has mass and takes up space
mass - the amount of matter in an object (related to weight)
volume - the amount of space an object takes up
balance - a scientific tool to measure the amount of matter in an object (the object's mass)
molecule - matter made up of two or more atoms joined together (water is a molecule H2O
At 0 degrees C (32 degrees F) ice melts - changes from a solid to a liquid
and
at 0 degrees C (32 degrees F) liquid water freezes to form a solid
0 degrees C is both the melting point and freezing point of water
At 1oo degrees C (212 degrees F) liquid water boils to form a gas
and
at 100 degrees C (212 degrees F) water vapor (gas) condenses to form a liquid
100 degrees C (212 degrees F) is both the boiling point and the condensing point of water
element - matter made up of only one kind of atom
periodic table - chart used by scientists to organize the elements
chemical changes - examples: burning, bubbling, color changes are all chemical changes (rust is a chemical change)
physical changes - examples: boiling, melting, freezing, ripping, crushing, breaking, cutting, bending are all physical changes
chemical changes - a change in a substance which changes the chemical nature and properties of a substance
physical changes - a change in which the substance itself is still the same substance (chemical makeup does not change)
atom - the smallest particle that can still be identified as the matter it came from
nucleus - the dense area in the center of an atom
proton - positively charged particle in the nucleus of an atom
neutron - neutrally charged particle in the nucleus of an atom
electron - negatively charged particle/s that circle the nucleus of an atom
density - a measure of how closely packed an object's atoms are (bowling ball has more atoms packed into it than a basketball)
mixture - a combination of two or more substances that are not permanently combined (example: Raisin Brand)
solution - a mixture in which all parts are mixed evenly (example: iced tea)
combustibility - a measure of how easily a substance will burn
reactivity - the ability of a substance to go through a chemical change
The following websites are helpful and fun:
General Chemistry and States of Matter
a. Chemistry for kids
http://www.chem4kids.com/files/matter_intro.html
b. States of Matter from the BBC
http://www.bbc.co.uk/schools/ks2bitesize/science/materials
c. States of Matter activity from Scholastic
http://teacher.scholastic.com/activities/studyjams/matter_states/
d. Study Jams from Scholastic - Matter
http://studyjams.scholastic.com/studyjams/jams/science/matter/properties-of-matter.htm
e. Visual of atoms of matter
http://www.chem.purdue.edu/gchelp/atoms/states.html
f. Science kids States of Matter activities
http://www.sciencekids.co.nz/gamesactivities/gases.html
Games from Quia
1. Rags to Riches game 1
http://www.quia.com/rr/10817.html
2. Matching terms
http://www.quia.com/mc/2199.html
3. Rags to Riches game 2
http://www.quia.com/rr/38085.html
4. Quia custom game
http://www.quia.com/custom/2202gate.html
5. Another Matching game from Quia
http://www.quia.com/mc/504943.html
6. Rags to Riches game 3
http://www.quia.com/rr/416290.html
7. Matching game 3
http://www.quia.com/mc/1858.html
8. Rags to Riches game 4
http://www.quia.com/rr/155852.html
9. Matching game 4
http://www.quia.com/mc/856449.html
Have Fun and Good Luck with the games!