chem unit 2 (map)

Question 1

atom

Answer 1

basic building block of all elements

Question 2

Dalton contributions

Answer 2

discovered that the atom is an indivisible, solid particle

Question 3

Thomson

Answer 3

created the plum pudding model

Question 4

what is the plum pudding model

Answer 4

cloud of + in a sea of -

Question 5

Rutheford

Answer 5

created the nuclear model (discovered nucleus)
gold foil experiment

Question 6

describe the nuclear model

Answer 6

most of the atom is empty space with e- scattered about
dense positive center = nucleus

Question 7

gold foil experiment

Answer 7

shot alpha particles (+) at a gold atom expecting them all to go through BUT some of them were deflected by the nucleus (+)

Question 8

Bohr

Answer 8

created the bohr/planetary model

Question 9

planetary model

Answer 9

electrons are in discrete, quantized energy levels (rings)

Question 10

Quantum mechanical/modern model

Answer 10

orbitals = high probability of finding electrons

Question 11

states of matter are…

Answer 11

solid, liquid, gas

Question 12

solid atoms are…

Answer 12

-closely packed
-organized
-vibrate in place

Question 13

liquid atoms are…

Answer 13

-less organized
-moving
-take shape of container
-more space in between them than solids

Question 14

gas atoms are…

Answer 14

-not organized
-constantly moving A LOT (random)
-MOST space in between them
-fill container they are in

Question 15

If a compound starts with an H…what is it?

Answer 15

An acid!

Question 16

two types of acids

Answer 16

binary and oxy

Question 17

binary acids

Answer 17

do NOT contain oxygen

Question 18

how to name a binary acid

Answer 18

hydro _______ -ic acid

(_______ = short name of element)

Question 19

how to name a oxy acid

Answer 19

NO HYDRO!
-ate —> -ic
-ite —-> -ous

Question 20

oxy acids

Answer 20

contain OXYGEN

Question 21

ionic compounds are between…

Answer 21

M and NM

Question 22

covalent compounds are between…

Answer 22

NM and NM

Question 23

Types of ionic bonds

Answer 23

binary, transition metals, polyatomic

Question 24

how to name binary compounds

Answer 24

cation —-> anion
drop end and add -ide

Question 25

what comes first in the formula/name? Cation/Anion?

Answer 25

CATION

Question 26

how to name transition metal compounds

Answer 26

name of trans. metal + roman numerals to indicate charge name of 2nd element ---> -ide

Question 27

compounds have a net charge of what?

Answer 27

O

Question 28

how to name polyatomic compound

Answer 28

name the metal (cation) write name of polyatomic using chart

Question 29

how to name covalent compounds

Answer 29

name first element ---> prefix if 1+ name second element ---> prefix and add -ide

Question 30

metal properties

Answer 30

-shiny -malleable -conductive -ductive -react with HCl and CuCl2

Question 31

nonmetal properties

Answer 31

-dull -brittle -not conductive -not ductile -no reaction with HCl and CuCl2

Question 32

metalloid properties

Answer 32

properties of both M and NM

Question 33

the metalloid elements are...

Answer 33

Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), Astatine (At)

Question 34

what make up atoms?

Answer 34

electrons, protons, and neutrons

Question 35

mass of electrons?

Answer 35

0 amu

Question 36

mass of protons?

Answer 36

1 amu

Question 37

mass of neutrons?

Answer 37

1 amu

Question 38

location of protons/neutrons

Answer 38

nucleus

Question 39

location of electrons

Answer 39

orbitals outisde of the nucleus

Question 40

charge of electrons

Answer 40

(-)

Question 41

charge of protons

Answer 41

(+)

Question 42

charge of neutrons

Answer 42

NONE- neutral

Question 43

what is an isotope?

Answer 43

element with SAME number of protons and DIFF number of neutrons

Question 44

what is the mass #

Answer 44

protons + nuetrons

Question 45

location of mass #

Answer 45

top left of elemental symbol

Question 46

location of atomic #

Answer 46

bottom left of elemental symbol

Question 47

what is an ion?

Answer 47

a charged particle protons DO NOT = electrons

Question 48

what is the atomic #

Answer 48

number of protons

Question 49

do protons = electrons?

Answer 49

yes, if there is NO charge

Question 50

why is light emitted from an element when energy is applied?

Answer 50

energy ---> excited state eventually moves back down to group state, releasing photons

Question 51

electromagnetic spectrum is order from lowest energy ---> highest energy

Answer 51

AM, TV, FM, micro-waves, visible light, UV-rays, X-rays, gamma rays

Question 52

true/false: Red has higher energy than violet

Answer 52

FALSE- violet has higher energy