apple tree

Question 1

Antoine Lavoisier

Answer 1

father of chemistry

Discovered this law.

Question 2

Chemical Equation

Answer 2

shorthand expression of a chemical reaction. Reactants -> product

Question 3

Coefficient

Answer 3

no. of molecules

Question 4

Subscript

Answer 4

no. Of atoms

Question 5

Molecular mass

Answer 5

total mass of all the atoms within a molecule or compound

Question 6

Total mass reactant

Answer 6

is always equal to product

Question 7

Law of definite proportion

Answer 7

A given compound always contains exactly the same proportion of elements by mass

Question 8

Law of conservation of mass

Answer 8

Mass is neither created nor destroyed in a chemical reaction

Question 9

Law of multiple Proportions

Answer 9

A given compound always contains elements in a certain proportion by mass. (Constant composition)

Question 10

Compound composition

Answer 10

Regardless of the amount, a compound is always composed of the same elements in the same proportion by mass

Question 11

Little, big numbers

Answer 11

subscripts, coefficients

Question 12

Ionic Bonding

Answer 12

forms ionic compounds, transfer of valence e-, Always formed between metal cations and non-metals anions, The oppositely charged ions stick like magnets

Question 13

Metallic Bonding

Answer 13

Always formed between 2 metals (pure metals)

Question 14

Covalent Bonding

Answer 14

forms molecules, sharing of valence e- Pairs of e- are shared between 2 non-metal atoms to acquire the electron configuration of a noble gas

Question 15

Octet rule

Answer 15

says that atoms can become stable by having eight electrons in their outer energy level, as shown in the noble gas, Neon

Question 16

John Dalton

Answer 16

Billiard Ball model, Solid Sphere

Question 17

J. J. Thompson

Answer 17

discovered electrons, plum pudding model

Question 18

Eugen Goldstein

Answer 18

discovered protons

Question 19

Ernest Rutherford

Answer 19

discoved nucleus of a gold atom with his gold foil experiment. Gold foil experiment (Alpha Scattering Experiment. Nuclear Model

Question 20

Niels Bohr

Answer 20

Specific energy level, Planetary Model

Question 21

Chemical Bonding

Answer 21

bond results from the attraction nuclei for electrons

Question 22

Valence é

Answer 22

outer most electrons of the s and p sublevel

Question 23

Noble gases

Answer 23

elements that aren’t reactive/ stable, inert gases

Question 24

Lewis Dot Structure

Answer 24

structure where numbers of valence electrons are represented by dots

Question 25

James Chadwick

Answer 25

discovered neutron in 1935

Question 26

Atomic mass

Answer 26

proton + neutron

Question 27

Erwin Schrodinger

Answer 27

Electron Cloud Model or Wave Madel or Quantum Mechanical Model

Question 28

Orbitals

Answer 28

region within an atom where a specific electron is most likely to be found