Structure of matter

Question 1

smallest division of matter

Answer 1

atoms

Question 2

all matter is made of

Answer 2

atoms

Question 3

atoms of the same type form an

Answer 3

element

Question 4

A molecule is made of different

Answer 4

elements

Question 5

Molecules combine to form a

Answer 5

substance

Question 6

based on 4 basic elements (air, Earth, Fire, and Water)

Answer 6

Greek atom

Question 7

eye and hook combination of elements

Answer 7

Dalton Atom

Question 8

uniform mass with electrons (like pudding)

Answer 8

Thompson Atom

Question 9

positive charged nucleus with electrons in orbits around the nucleus (used today)

Answer 9

Bohr atom

Question 10

There are _basic subatomic particles

Answer 10

three

Question 11

Protons and neurons are located in the

Answer 11

nucleus

Question 12

_ are in orbital shells floating around the nucleus

Answer 12

Electrons

Question 13

The rest of the atom is

Answer 13

empty space

Question 14

_are positively charged

Answer 14

protons

Question 15

protons has _ unit of atomic mass

Answer 15

1

Question 16

symbol is a

Answer 16

+

Question 17

protons are located in the

Answer 17

nucleus

Question 18

Neutron has _ charge

Answer 18

no

Question 19

neutrons has _ unit of atomic mass

Answer 19

1

Question 20

Neutron symbol is

Answer 20

o

Question 21

Neutrons are located in the

Answer 21

nucleus

Question 22

Electrons are _ charged

Answer 22

negatively

Question 23

electrons has _ units of atomic mass

Answer 23

0

Question 24

Electron’s symbol is

Answer 24

-

Question 25

electrons are located in _ orbiting around the nucleus

Answer 25

shells

Question 26

atoms are electrically _ in their normal state

Answer 26

neutral

Question 27

the z # is the number of _ in the atom

Answer 27

protons

Question 28

The mass # is the total number of _ + _

Answer 28

protons

neutrons

Question 29

Electrons fill up the orbital shells based on the total number of _ in the atom

Answer 29

electrons

Question 30

_ is the maximum # of electrons in a shell

Answer 30

2n

Question 31

The strength of attraction of an electron to the nucleus is the

Answer 31

electron binding energy

Question 32

electrons are held in their orbital shells by

Answer 32

electron binding energy

Question 33

an atom with a higher Z # has a

Answer 33

greater binding energy

Question 34

the removal of an electron from its shell is called

Answer 34

ionization

Question 35

same Z # but different mass #

Answer 35

isotopes

Question 36

different elements with same # of nucleons

Answer 36

Isobar

Question 37

same # of neutrons but different # of protons

Answer 37

Isotone

Question 38

Same Z # and the same mass #

Answer 38

Isomer

Question 39

same Z # but different # of electrons

Answer 39

Ions

Question 40

The emission of particles and energy in order to become stable

Answer 40

radioactivity

Question 41

Radioactivity is also called

Answer 41

radioactive decay

disintergration

Question 42

atoms which under go radioactivity are called

Answer 42

radionuclides

Question 43

results in the release of alpha and beta particles and gamma rays

Answer 43

radioactive decay

Question 44

time required to reduce the radioactivity to one half of the original value

Answer 44

Radioactive half life

Question 45

3.3 half-lives =

Answer 45

1tenth life

Question 46

Two basic forms of radiation are

Answer 46

electromagnetic

particulate

Question 47

Both forms may come from

Answer 47

natural or man-made sources

Question 48

What are the 2 main types of particulate radiation

Answer 48

Alpha

beta

Question 49

What are the 2 main forms of electromagnetic radiation

Answer 49

Gamma

x-ray