atoms
What is the charge of an electron
negative
What is unit of volume
milliliter
How many electrons are in a potassium atom
19
sharing of electrons define
transfer of electrons define
Covalent bonding
Ionic bonding
pH less than 7
pH greater than 7
Acid
Base
What is an atom
basic building block of matter
What is a control in an experiment
something to compare to
How many neutrons are in a carbon-14 atom
8
Number of valence electrons that makes an atom stable
8
How do you get salt out of water
Boil or distillation
what is in the nucleus
protons and neutrons
If you are studying the effect of sunlight on the growth of bean plants what would be a constant in this experiment
bean
water
soil
What is the name of group 17
Halogens
number of electrons in an ion of sodium
10
What does the dissolving
example water
Solvent
What is equal in an atom
protons and electrons
what is the density of an object with a mass of 25 grams and volume of 50 ml?
0.5 g/ml
Name all 6 metalloids
B, Si, Ge, Sb, As, Te
Write formula for calcium phosphide
does not dissolve
insoluble
Draw a Bohr diagram of magnesium
protons= 12
neutrons= 12
electrons 2-8-2
write the 3 formulas to solve for mass
volume and density
m= d x v
d=m/v
v=m/d
Name 4 characteristics of metals
shiny, good conductors of heat and electricity, malleable, ductile, lose electrons, positive ions, mostly solids at room temperature
2Al + 3CuCl2--> 3Cu + 2AlCl3
Identify the reaction
Single Replacement
Name 3 common acids and bases
acids= OJ, soda, coffee, HCl,
Bases= NaOH, soap, ammonia, bleach