periodic table
What number tells you the number of protons and electrons?
atomic number
what is a chemical reaction?
When one or more substances are changed into new substances
what is a mole?
a unit representing an amount of substance
where are protons located?
nucleus
Has a definite shape and volume
Solid
Number of liquids on the periodic table
2
When heat is produced, light is emitted, or a precipitate is formed this is an indication of this
chemical reaction
mol
Protons and neutrons are about the same size. True or False?
TRue
In what state do molecules move extremely quickly and by bouncing off each other
Gas
number of gases in the periodic table
11
elements need __ electrons to bond and react to each other
8
what number is a mole equal to?
6.02 x 1023
What kind of charge is when an atom gains an electron?
negative
has a definite volume and loose shape
liquid
what element has the smallest molar mass?
hydrogen
________ ---> ________
a) reactant
b) product
reactant --> product
molar mass of CCL4
153.82 g/mol
Electrons move from one of these to another when atoms gain or lose energy
energy level
what does a gas become when it is cooled?
liquid
This element has 3 energy levels and 18 neutrons
the arrow in a chemical equation points to the:
product
molar mass of Fe (iron)
55.845 g/mol
what is the octet rule?
the ring of valence electrons must be 8 to be balanced
Phase change of a gas turning into a liquid
condensation