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 ?
English chemist who formulated an atomic theory and the law said that all atoms of an element are identical, chemical reactions occur when atoms recombine in new ways, simple whole numbers
Mortar & Pestle does what ?
Grinds Solids
What is Avogadro's Number ?
number of representative particles in a mole, 6.02 X 10^23
What is atomic mass ?
total weight of protons and neutrons
The ability of a solute to be dissolved in a particular substance is called ?
Solubility
What did J.J Thompson 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
What is Bohr's Diagram ?
a diagram of an atom which includes all protons, neutrons, electron shells, and electrons
2 particles that are inside the nucleus of an atom
neutrons and protons
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
You can prepare a solution in this:
A beaker
Measure of the sum of the atomic weight values of the atoms in a molecule
Molecular weight
What is an element ?
A molecule composed of one kind of atom; cannot be broken into simpler units by chemical reactions.
State of matter than can change shape but the volume remains
liquid state
Thompson's model was called ?
The Plum Pudding Model
Transfers and measures (volume) small amounts of liquids
A pippette
What is a limiting reactant ?
the substance that is consumed completely - controls the quantity of product that can form in a chemical reaction. Can be determined by calculating the mass of a single product formed from each reactant.
What are the horizontal rows on the periodic table called ?
Periods
Chemical formula of water
H2O
Who was Democritus ?
Greek philosopher that said all matter is made of tiny, indestructible particles called atoms
Used to mix, measure, and heat solutions or chemicals
Erlenmeyer flask
What is combustion ?
Burning. Oxygen gas is one of the reactants and water is one of the products.