Elements
Atoms
Periodic Table
Ionic Compounds
Chemical Reactions
100
Cl
What is the chemical symbol for chlorine?
100
This particle determines which element an atom is, and is represented in the atomic number.
What is a proton?
100
Helium, Neon, Argon, Krypton, Xenon and Radon.
What are the noble gases?
100
The charge on a sodium ion.
What is 1+?
100
A change in which the reactants are the same compounds as the products.
What is a physical change?
200
Na
What is the chemical symbol for sodium?
200
A subatomic particle with a negative charge.
What is an electron?
200
Sodium, Lithium, Potassium, Rubidium, Cesium, Francium
What are the Alkali Earth Metals?
200
The balanced chemical formula for calcium bromide.
What is CaBr2?
200
Matter cannot be created or destroyed.
What is the law of conservation of matter.
300
C
What is the chemical symbol for Carbon?
300
A particle located in the nucleus of an atom, with no charge.
What is a neutron?
300
Three of the elements that make up the family of halogens.
What are Fluorine, Chlorine, Bromine, Iodine, or Astatine?
300
The charge on an oxide ion.
What is 2-?
300
A compound containing carbon atoms and hydrogen atoms, joined by covalent bonds.
What is a hydrocarbon?
400
Cu
What is the chemical symbol for copper?
400
The number of valence electrons required for atom stability.
What is 8?
400
Carbon, Oxygen, Nitrogen, Phosphorus, Sulfur, and Selenium.
What are non-metals?
400
The balanced chemical formula for sodium sulfide.
What is Na2S?
400
A compound formed by long chains of covanlently bonded molecules.
What is a polymer?
500
K
What is the chemical symbol for potassium?
500
An atom that has the same number of protons as other atoms of the same element, but a different number of neutrons, and therefore a different mass.
What is an isotope?
500
Elements with 2 valence electrons.
What are the alkali metals?
500
The balanced chemical formula for iron(III)oxide.
What is Fe2O3?
500
Color change, forming a precipitate, forming bubbles, releasing energy, odor
What are signs of a chemical reaction.
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