CHEMISTRY

Question 1

Chemistry

Answer 1

understanding the composition of substances / how they come together / how they react to each other

Question 2

Matter

Answer 2

anything that has mass and takes up spaces/volume

Question 3

Element

Answer 3

all matter is made up of elements

Question 4

Atom

Answer 4

smallest particle of an element

Question 5

Atomic Number =

Answer 5

the number of protons in an atom

Question 6

How is the periodic table organized?

Answer 6

by the atomic number

Question 7

Periodic Table - Horizontal

Answer 7

periods

Question 8

Periodic Table - Left Side

Answer 8

metals

Question 8

Periodic Table - Vertical

Answer 8

groups/families

Question 9

Periodic Table - Right Side

Answer 9

nonmetals

Question 10

Periodic Table - Middle

Answer 10

transition metals

Question 11

Metal Characteristic

Answer 11

shiny/ malleable(flexible)/ductile/conductivity(good conductors)/high density and melting point

Question 12

Nonmetal Characteristic

Answer 12

dull/not flexible/not ductile/ poor conductors(insulators)/low density and melting point

Question 13

Lithium

Answer 13

metal

Question 14

Beryllium

Answer 14

metal

Question 15

Magnesium

Answer 15

metal

Question 16

Potassium

Answer 16

metal

Question 17

Calcium

Answer 17

metal

Question 18

Hydrogen

Answer 18

nonmetal

Question 19

Carbon

Answer 19

nonmetal

Question 20

Nitrogen

Answer 20

nonmetal

Question 21

Oxygen

Answer 21

nonmetal

Question 22

Phosphorus

Answer 22

nonmetal

Question 23

Sulfur

Answer 23

nonmetal

Question 24

Fluorine

Answer 24

nonmetal

Question 25

Chlorine

Answer 25

nonmetal

Question 26

Bromine

Answer 26

nonmetal

Question 27

Iodine

Answer 27

nonmetal

Question 28

Atom consists of:

Answer 28

protons, neutrons, and electrons

Question 29

Protons Charge

Answer 29

positive charge

Question 30

Neutron Charge

Answer 30

no charge/neutral

Question 31

Electrons Charge

Answer 31

negative charge

Question 32

Nucleus contains:

Answer 32

protons and neutrons

Question 33

Where are electrons located?

Answer 33

orbit outside the nucleus

Question 34

Atomic Mass =

Answer 34

the average mass of an atom in an element

Question 35

Number of protons =

Answer 35

number of electrons

Question 36

How do you find the number of neutrons?

Answer 36

mass number - protons

Question 37

How do you find the atomic mass?

Answer 37

protons + neutrons

Question 38

Why aren't electrons included in the atomic mass

Answer 38

electron mass is very tiny compared to protons and neutron mass

Question 39

What is an Isotope?

Answer 39

two of the same element with/ the same number of protons, and electrons, but different neutrons

Question 40

What is electron configuration?

Answer 40

identify the location of the electrons of an atom

Question 41

Electrons surround the nucleus in

Answer 41

shells

Question 42

Subshells names:

Answer 42

s,p,d,f subshells

Question 43

s subshell can hold

Answer 43

2 electrons

Question 44

p subshell can hold

Answer 44

6 electrons

Question 45

d subshell can hold

Answer 45

10 electrons

Question 46

f subshell can hold

Answer 46

14 electrons

Question 47

Subshell orbitals are organized from

Answer 47

lowest to highest energy

Question 48

Valence electrons

Answer 48

are electrons in the outermost shell that have the most energy

Question 49

Octet rule

Answer 49

element seeks to have 8 electrons in its outermost energy shell

Question 50

Order of subshell filing:

Answer 50

1s,2s,2p,3s,3p,4p

Question 51

Atomic radius

Answer 51

measure from the center of the nucleus to the outermost electron

Question 52

Electronegativity

Answer 52

measures how strongly an atom attracts electrons

Question 53

What element has the highest electronegativity?

Answer 53

Fluorine

Question 54

Ionization energy

Answer 54

how much energy is require to remove an electron from an atom

Question 55

Ionic bonds

Answer 55

one atom loses electron to another atom

Question 56

Cation =

Answer 56

positive charge

Question 57

Anion =

Answer 57

negative charge

Question 58

Electrostatic charge

Answer 58

bond form b/c the positive charge is attracted to the negative charge

Question 59

Salt is formed by

Answer 59

ionic bonds (metal +nonmetal)

Question 60

Naming ionic compound

Answer 60

cation name goes first then anion (-ide or -ate)

Question 61

Monoatomic(anion)

Answer 61

-ide (made of one type of anion)

Question 62

Polyatomic(anion)

Answer 62

-ate (made of more than 1 type of anion)

Question 63

Covalent bonds

Answer 63

two atoms share electrons(form when atoms have equal amount of electronegativities)

Question 64

Polar covalent

Answer 64

atoms are shared unequally

Question 65

Nonpolar covalent

Answer 65

atoms are shared equally

Question 66

Single covalent bonds

Answer 66

1 pair of electrons are shared

Question 67

Double covalent bonds

Answer 67

2 pairs of electrons are shared

Question 68

Triple covalent bonds

Answer 68

3 pairs of electrons are shared

Question 69

Covalent bond is

Answer 69

stronger than ionic bonds

Question 70

Hydrogen bonds

Answer 70

the force of attraction between a hydrogen and an electrogative

Question 71

Cohesive

Answer 71

two molecules stick to each other (water)

Question 72

Adhesive

Answer 72

water is attracted to other substances

Question 73

Chemical reactions

Answer 73

one or more substances (reactants) are converted to different substances (products)

Question 74

Subscript number

Answer 74

tells you how many atoms are in that molecule

Question 75

Coefficient number

Answer 75

the BIG number before the molecule tells you how many molecules you have.

Question 76

How to find the total amount of hydrogen atoms:

Answer 76

multiply the coefficient x the subscript number

Question 77

Law of conservation of mass

Answer 77

mass can neither be created nor destroyed

Question 78

Mole

Answer 78

one mole of a substance is equal to 6.022 x 10^23 units of that substance