The Atom
ECM
Perioidic Table
Changes in Atoms
100
Electron
What has a negative charge inside the nucleus of an atom?
100
element
What is something that cannot be separated into a simpler form?
100
families/group
What are elements with similar chemical properties called on the Periodic Table?
100
evaporation
What is it called when liquid changes to a gas?
200
Proton
What has a positive charge that is located in the nucleus of an atom?
200
compound
What is two or more kinds of atoms chemically combined?
200
tearing paper, melting butter, evaporation of water
What are examples of physical changes?
300
Electron Cloud
What is the region around the nucleus of an atom?
300
mixture
What is a substance made by mixing other substances together, but not chemically combined?
300
element
What is a pure substance on the periodic table that is only made up of one kind of atom?
300
lighting a match, cooking an egg, burning wood, digesting food
What are examples of chemical changes?
400
electrons and protons
What is found inside the nucleus of an atom?
400
gold, oxygen, hydrogen, sodium and calcium
What are examples of elements?
400
Transition metals
What are found on the far left of the periodic table?
400
gas formation, temperature change, color change and solid formation
What are the four major signs of a chemical reaction?
500
electrons
What is always moving inside the nucleus of an atom?
500
carbon atoms and sucrose
What are examples of compounds?
500
alkaline metals
What are the second most reactive metals on the periodic table?
500
malleability
What word means to change a substance into a different shape?
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