Unit 2 Concept 7

Question 1

Attractive force

Answer 1

Force between the protons in the nucleus and the electrons in the electron cloud-what holds the atom together

Question 2

2 repulsive force

Answer 2

Force between the electrons. What gives the electron cloud volume.

Question 3

3. Repulsive force

Answer 3

Force between protons creates a insane amount of energy which causes the nucleus to hold together

Question 4

Nucleus

Answer 4

dense center of an atom-made of protons and neutrons-positively charged-where the mass of atom is located

Question 5

Two parts of an atom?

Answer 5

Nucleus- electron cloud

Question 6

Electron cloud

Answer 6

Space surrounding nucleus- broken down into energy levels-electrons further from the nucleus have the most energy-where the volume is located

Question 7

Valence electrons

Answer 7

Electrons in the outermost energy level

Question 8

Quarks

Answer 8

Smallest known particle that makes up both protons and neutrons

Question 9

Atomic number

Answer 9

Tells the number of protons in a atom

Question 10

Symbol

Answer 10

Abbreviation of the name of the element

Question 11

Mass number

Answer 11

Not on periodic table- tells the number of protons and neutrons

Question 12

Isotopes

Answer 12

Atoms of the same element with different number of neutrons

Question 13

Most stable atoms is when?

Answer 13

Number of protons and neutron are the same

Question 14

Hyphen form

Answer 14

Potassium-40

Question 15

Nuclear form

Answer 15

Tiny 40 then regular sized K

Question 16

Average atomic mass?

Answer 16

Weighted average of all different versions of an element. Closest to the most common isotope of the element

Question 17

Groups of the periodic table are?

Answer 17

The vertical cloumns

Question 18

How many groups are there?

Answer 18

18

Question 19

Period are what?

Answer 19

Horizontal rows

Question 20

How many periods are there?

Answer 20

7

Question 21

Groups tell u what?

Answer 21

Valence electrons. All elements in the same group have same # of valence electrons

Question 22

Group 1 name?

Answer 22

Alkali metals- most reactive

Question 23

Group 2 name

Answer 23

Alkaline earth metals.

Question 24

Group 3 name

Answer 24

Rare earth metals

Question 25

3-12 group name?

Answer 25

Transition metals

Question 26

Group 17 name

Answer 26

Halogen. Most reactive nonmetals

Question 27

Group 18 name

Answer 27

Noble gases. Non reactive elements due to already being chemically stable

Question 28

Groups 13-16 names

Answer 28

The first element in those groups are their names

Question 29

When do metals get most reactive

Answer 29

When u go down the column/group

Question 30

Nonmetals get more reactive when?

Answer 30

U move up the column/group

Question 31

Most reactive metal element on the table

Answer 31

Francium

Question 32

Most reactive nonmetal

Answer 32

fluorine

Question 33

The number of periods means what?

Answer 33

The number of energy levels

Question 34

Things about metals

Answer 34

Shiny,silvery solids
Good conductors of a heat and electricity
Malleable and ductile
Located on the left of the metalloids

Question 35

Nonmetals things about them

Answer 35

Gas or dull brittle solids
Poor conductors
Right of the metalloids
With the exception of hydrogen

Question 36

Metalloids things about them

Answer 36

Solids
Semiconductor
Physical properties like metal
Chemical properties like nonmetals

Question 37

What are the metalloids

Answer 37

B-boron
Si-silicon
Ge-germanium
As-arsenic
Sb-antimony
Te- tellurium