Chem 1 midterm

Question 1

Anything that has volume and mass

Answer 1

Matter

Question 2

Two or more different atoms bonded together

Answer 2

Compound

Question 3

Two or more substances physically combined

Answer 3

Mixture

Question 4

Type of matter composed of the same type of atom or molecule

Answer 4

Pure Substance

Question 5

Different molecular forms of an element (oxygen, ozone)

Answer 5

Allotrope

Question 6

Matter that can’t be broken down into a simpler substance

Answer 6

Element

Question 7

Two of the same atom bonded together

Answer 7

Diatomic Molecule

Question 8

Smallest representation of an element

Answer 8

Atom

Question 9

A mixture evenly mixed together

Answer 9

Homogeneous Mixture

Question 10

Physical properties that have to do with numbers

Answer 10

Quantitative Data

Question 11

Starting material of a chemical reaction

Answer 11

Reactant

Question 12

Two pure substances unevenly combined together

Answer 12

Heterogeneous Mixture

Question 13

This states that matter can’t be created or destroyed in a chemical reaction

Answer 13

Law of Conservation of Mass

Question 14

Two or more similar or different atoms bonded together; smallest unit of a compound

Answer 14

Molecule

Question 15

The ending material of a chemical reaction

Answer 15

Product

Question 16

Two atoms with the same number of protons but different number of neutrons

Answer 16

Isotope

Question 17

A weighted average of all of an element’s isotopes masses

Answer 17

Molar Mass

Question 18

The total number of protons and neutrons in the nucleus of an atom

Answer 18

Atomic Mass Number

Question 19

Describes total number of protons in the nucleus of an atom

Answer 19

Atomic Number

Question 20

A group of atoms covalently bonded together with an overall (non-zero) charge

Answer 20

Polyatomic Ion

Question 21

Refers to a column in the periodic table

Answer 21

Group

Question 22

Specific name given to the 17th column in the periodic table

Answer 22

Halogen Group

Question 23

Negatively charged atoms or molecules

Answer 23

Anion

Question 24

Number that contains 6.022 X 10^23 things

Answer 24

Avogadro’s Number / Mole

Question 25

Refers to a row in the periodic table

Answer 25

Period

Question 26

Charged atom or molecule

Answer 26

Ion

Question 27

Positively charged atom or molecule

Answer 27

Cation

Question 28

Group in periodic table that doesn't react with anything and are mainly gases

Answer 28

Noble Gases / Group 18

Question 29

States that atoms will gain, lose or share e' until they have 8 e' in their valence shell

Answer 29

Octet Rule

Question 30

Describes elements in groups 3 to 12 in the periodic table

Answer 30

Transition Metals

Question 31

Specific name given to the second column in the periodic table

Answer 31

Alkaline Earth Metals

Question 32

How close a measured value is to the true value

Answer 32

Accuracy

Question 33

Smallest whole number ratio of atoms in a compound

Answer 33

Empirical Formula

Question 34

Contains all wavelengths of visible light; rainbow

Answer 34

Continuous Spectrum

Question 35

Elements that have the properties of both metals and nonmetals

Answer 35

Metalloids

Question 36

The value that describes how much 1 mole of a compound weighs

Answer 36

Molar Mass

Question 37

Specific amount of energy

Answer 37

Quantized

Question 38

The number of cycles a second

Answer 38

Frequency

Question 39

The shape that describes the highest probability of finding an electron

Answer 39

Orbital Configuration

Question 40

State where the e' contains the smallest amount of energy possible

Answer 40

Ground State

Question 41

The highest energy level occupied by e'

Answer 41

Valence Shell

Question 42

Spectrum that contains only a few wavelengths of visible light

Answer 42

Line Spectrum

Question 43

When the minimum amount of energy is shined on a metal's surface and a e' is ejected

Answer 43

Photoelectric effect

Question 44

an e' will occupy each orbital orientation before pairing occurs

Answer 44

Hund's rule

Question 45

E' will enter the e' cloud starting with the lowest energy state first

Answer 45

Aufbau principle

Question 46

Scientist that defined the term element

Answer 46

Antoine Lavoisier

Question 47

The distance between crest to crest of a wave

Answer 47

Wavelength

Question 48

Discovered the nucleus of the atom using Au and alpha particles

Answer 48

Ernest Rutherford

Question 49

State where an e' has gained energy and moved to a higher energy level

Answer 49

Excited State

Question 50

Br I N Cl H O F

Answer 50

Diatomic Molecules

Question 51

Model of the atom where we know nothing about its structure

Answer 51

Black Box Model

Question 52

First to use the scientific method; Law of Conservation of mass

Answer 52

Antoine Lavoisier

Question 53

Discovered Nuclear Radiation

Answer 53

Henri Becquerel

Question 54

Name given to group 17 in the periodic table, elements gain 1 e' to form an octet

Answer 54

Halogens

Question 55

An area around the nucleus where the e' were surrounded by a sea of positives

Answer 55

Bad question, probably either plum pudding or orbitals. mark as you did it and move on

Question 56

First to believe in all matter was composed of small particles called atoms

Answer 56

John Dalton

Question 57

Model of the atom where the e' were surrounded by a sea of positives

Answer 57

Plum Pudding Model

Question 58

Proposed the Plum Pudding Model

Answer 58

JJ Thomson

Question 59

Discovered the e' and its negative charge using the Crookes tube and magnet

Answer 59

JJ Thomson

Question 60

The area that describes the highest probability of finding an e'

Answer 60

Orbital