chemistry

Question 1

heating + freezizng

Answer 1

sterilization, kills microorganisms

Question 2

salting

Answer 2

preserving by drying out water and bacteria

Question 3

fermentation

Answer 3

preserve food and keep vitamins

Question 4

metallurgy

Answer 4

science of producing and using metals

Question 5

aristotle

Answer 5

matter is made up of earth, water, fire and air

Question 6

democritus

Answer 6

matter is made up of tiny particles

Question 7

alchemy

Answer 7

combination of science + magic, cheap metal into gold

Question 8

antonie lavoisier

Answer 8

law of conservation of mass

Question 9

boyle

Answer 9

gasses are made up of tiny particles

Question 10

john dalton

Answer 10

atoms are the smallest particles , indivisible

Question 11

jj thomson

Answer 11

atoms made of smaller, particles, raisin bun theory

Question 12

ernest rutherford

Answer 12

discovered nucleolus, very dense and positive charge

Question 13

neils bohr

Answer 13

electrons occupy the whole space all at once, at different energy levels

Question 14

atom

Answer 14

smallest possible part of an element, that also will still hold that element properties

Question 15

molecule

Answer 15

group of non-metallic atoms bound together to covalent

Question 16

ION

Answer 16

an atom or molecule with a net electric charge due to the loss of gain of one or more electrons

Question 17

cation

Answer 17

positively charged ION, formed when a metal has lost an electron

Question 18

anion

Answer 18

negatively charged ion

Question 19

element

Answer 19

pure substances that cannot be broken down into other substances

Question 20

atomic number

Answer 20

the # of protons and electrons for an atom

Question 21

isotope

Answer 21

different versions of the same atom, different # of neutrons

Question 22

mass number=

Answer 22

protons + neutrons

Question 23

atomic number =

Answer 23

the number of electrons

Question 24

matter

Answer 24

anything that has mass and takes up space

Question 25

energy levels

Answer 25

region of space near an atoms nucleus that may be empty or may contain electrons

Question 26

mass number

Answer 26

integer equal to the total number of protons and neutrons in the nucleus of an atom

Question 27

molar mass

Answer 27

the mass of one mole of a substance

Question 28

periods

Answer 28

horizontal rows, there are seven periods in total

Question 29

groups/families

Answer 29

vertical rows

Question 30

alkali metal

Answer 30

very reactive metals, that do NOT occur freely in nature

Question 31

alkaline earth metals

Answer 31

very reactive elements, NOT found freely in nature

Question 32

transition metals

Answer 32

ductile and malleable also conduct heat and electricity, 78

Question 33

other metals

Answer 33

different properties than the transition elements, all are solids

Question 34

metalliods

Answer 34

properties of both metals and non metals

Question 35

non metals

Answer 35

not able to conduct electricity or heat, very brittle

Question 36

halogens

Answer 36

solids/liquids/gases, salt former

Question 37

Nobel gases

Answer 37

very stable elements, colorless and odorless

Question 38

valence

Answer 38

outer energy level electrons

Question 39

ionic compound

Answer 39

an ionic bond forms between the cation and anion

Question 40

univalent

Answer 40

only one "choice" of cation change

Question 41

non metals charges are

Answer 41

anion

Question 42

metals charges are

Answer 42

cation

Question 43

multivalent cations

Answer 43

cations that have 2 or more ionic charge "choices"

Question 44

polyatomic ion

Answer 44

group of atoms that make a charge most polyatomic ions are anions

Question 45

one atom

Answer 45

mono

Question 46

two atoms

Answer 46

di

Question 47

three atoms

Answer 47

tri

Question 48

four atoms

Answer 48

tetra

Question 49

five atoms

Answer 49

penta

Question 50

six atoms

Answer 50

hexa

Question 51

seven atoms

Answer 51

hepta

Question 52

eight atoms

Answer 52

octa

Question 53

nine atoms

Answer 53

hona

Question 54

ten atoms

Answer 54

deca