Periodic Table
Covalent molecules are made up of (metal/nonmetal) atoms.
Covalent molecules are made up of nonmetal atoms.
What is an atom that has either gained or lost an electron?
An ion
When lighting a bunsen burner, do you turn on gas or light lighter first?
Turn on the lighter first
All reactions have __________ & products.
All reactions have reactants & products.
What is Avogadro's number (NA)?
NA = 6.02 x 1023
How many grams are in a 1 mole sample of carbon-12?
12 grams of carbon-12
What is the name of Group 2A elements?
Alkaline Earth Metals
What is the name of this compound
NaCl
sodium chloride
What is the symbol for Potassium?
K
The Law of ____________ of Matter states that in a chemical reaction, matter cannot be created or destroyed.
The Law of Conservation of Matter states that in a chemical reaction, matter cannot be created or destroyed.
What do moles measure?
Number or Quantity of particles
In Chemistry, what does STP stand for?
Standard Temperature & Pressure
What is the atomic number of calcium?
20
What is the name of the molecule described below?
P2O5
diphosphorous pentoxide
What is the oxidation number (or charge) for Bromine?
-1
What type of reaction is shown below?
N2 + 3H2 → 2NH3
Synthesis reaction.
________ mass for a substance is the amount of mass in 1 mole of that substance.
Molar mass for a substance is the amount of mass in 1 mole of that substance.
If the molar mass of Ca is 40 g/mol, then how many moles of calcium are found in a 80g sample?
(80g)/(40 g/mol) = 2 moles
Clara Clatter was born on December 27, on a hot summer’s day. How is that possible?
What is the overall charge of an ionic compound?
Zero (or neutral)
How many donuts are in 3 dozen?
36
A _______-replacement reaction occurs when two ionic compounds trade ions.
A Double-replacement reaction occurs when two ionic compounds trade ions.
How many grams of sodium are in 3 moles of sodium?
68.97g
How many moles of a gas (at STP) are in a 22.4 L sample?
1 mole
A clerk in the butcher shop is 5' 10'' tall. What does he weigh?
meat
What is the formula for the following molecule?
Sulfur hexafluoride
SF6
How many tricycles can be made if you have 9 bike seats, 17 handlebars, and 13 wheels?
4
Fill in the missing coefficient in the equation below.
__H2O2 → 2H2O + O2
2H2O2 → 2H2O + O2
What is the molar mass of NaCl?
58.443 g/mol
How many particles are in 180.3 g of SiO2?
180.3 g SiO2
=
3 moles SiO2
=
1.806 x 1024 SiO2 molecules