Periodic Table
What are the elements in Group 18 called ?
Noble Gases
A dissolved substance is called ?
Solute
Who was John Dalton & what did he do ?
formulated an atomic theory and the law of multiple proportions
Mortar & Pestle does what ?
Grinds Solids
What is Avogadro's Number ?
number of representative particles in a mole, 6.02 X 1023
What is mass number ?
protons and neutrons
The ability of a solute to be dissolved in a particular substance is called ?
Solubility
What did J.J Thomson do ?
used the cathode ray tube to discover electrons
What does a graduated cylinder do ?
measure volume
A chemical reaction where two elements in different compounds trade places is what ?
Double Replacement
Bohr's model
Planetary model (first quantum model)
Calculate the molarity of 1.60 Liters of solution containing 1.55 grams of KBr.
.008M
He was known for his gold foil experiment- fired negative ions at thin sheet of gold foil, discovered the atomic nucleus and proposed a nuclear model of the atom , who is he ?
Ernest Rutherford
A striker does what ?
Lights bunsen burner
What is percent yield ?
the ratio of the actual yield to the theoretical yield, multiplied by 100
What is an element ?
A molecule composed of one kind of atom; cannot be broken into simpler units by chemical reactions.
How many grams would it take to make a 3.5M solution of calcium chloride in 100ml of solution?
38.5g
JJ Thomson's model was called ?
The Plum Pudding Model
A scoopula does what ?
Transfers solids & fine powders
What is a limiting reactant ?
the substance that is consumed completely - controls the quantity of product that can form in a chemical reaction.
What are the horizontal rows on the periodic table called ?
Periods
What is the molarity of a solution containing 40.0 grams of glucose (C6H12O6) in 1.5 liters of solution?
.15M
Who was Democritus ?
Greek philosopher that said all matter is made of tiny, indestructible particles called atoms
Test tube brushes do what ?
cleans test tubes
What is combustion ?
Burning. Oxygen gas is one of the reactants and water is one of the products.