Atomic theory
Who discovered the atom?
Dalton
What element is Cu?
copper
What are the three states of matter?
Solid, liquid, gas
How do you find volume?
Mass divided by density
Which group has only 2+ ion charges?
Alkaline Earth Metals
Who discovered the electron?
Thomson
What is nitrogens atomic number?
7
What are particles constantly doing?
Moving
what are the units for measuring volume
cm3 or mL or L
Which group has no ion charge?
Noble Gases
Who discovered the nucleus?
Rutherford
How many neutrons are in mercury?
121
What is in between particles?
Space
How do you find mass
Density times volume
What are the 2 ways of grouping elements?
Periods and Groups
Who discovered the electron shells?
Bohr
What element has ion charges of 2+,4+ and has an atomic mass of 106.4?
Palladium
Particles are _________ to one another
Attracted
In water, what is the density of which something will float or sink?
1 g/cm³
Which group has highly reactive metals?
Alkalai Metals
When was the bohr model discovered?
1913
What element has ion charges of 6+, 4+ and 5+ and an atomic mass of 238.0?
Uranium
What is it called when a liquid turns into a solid?
Freezing
If copper has a density of 0.6g/cm3 and gold has a density of 1.1g/cm3, then which would float on water?
Copper
Which group has metals that may burn in air if they are heated?
Alkaline Earth Metals