CH 11 & 12

Question 1

the smallest particle an element can be broken down into and still maintain its identity.

Answer 1

Atom

Question 2

What atom means in Greek

Answer 2

“Not able to be divided or indivisible”

Question 3

negative charge, amu 1/1800 least mass almost 0

Answer 3

Electrons

Question 4

positive charge, amu 1

Answer 4

Protons

Question 5

neutral charge, amu 1

Answer 5

Neutrons

Question 6

protons + neutrons

Answer 6

Mass number

Question 7

number of protons in the nucleus

Answer 7

Atomic number

Question 8

describes the mass of an atom in SI units

Answer 8

Atomic mass unit

Question 9

mass of an atom in A.M.U. (Atomic Mass Units)

Answer 9

Atomic mass

Question 10

All matter is made up of…?

Answer 10

Atoms

Question 11

What is in the center of an atom?

Answer 11

The nucleus

Question 12

always have the same number of protons, but different neutrons.

Answer 12

Isotopes

Question 13

keeps the protons together in the nucleus.

Answer 13

Strong force

Question 14

holds electrons in place around the nucleus.

Answer 14

Electromagnetic force

Question 15

pulls objects toward one another.

Answer 15

Gravitational force

Question 16

Many elements have how many isotopes?

Answer 16

2 or more

Question 17

Most of the elements on the periodic table are…?

Answer 17

Metals

Question 18

The horizontal rows on the periodic table are called…?

Answer 18

Periods

Question 19

The vertical columns on the periodic table are called…?

Answer 19

Groups or families

Question 20

The color of the chemical symbol tells…?

Answer 20

the physical state of an element at room temperature

Question 21

As you move across each period the chemical and physical properties of elements change from…?

Answer 21

most metallic to least metallic

Question 22

Mendeleev arranged his periodic table by…?

Answer 22

increasing atomic mass

Question 23

Mendeleev found that the properties of known elements did what?

Answer 23

repeated a pattern every 7 elements

Question 24

Each square on the periodic table includes

Answer 24

an element’s name, chemical symbol, atomic number and atomic mass.

Question 25

Elements found to the far left of the periodic table are…?

Answer 25

the most metallic

Question 26

Elements found to the far right of the periodic table are…?

Answer 26

the least metallic

Question 27

Elements found to the far right of the periodic table are grouped as…?

Answer 27

nonmetals

Question 28

The number beneath an element indicates…?

Answer 28

the atomic mass

Question 29

The number at the top of an element is…?

Answer 29

the atomic number

Question 30

Transition metals are good conductors of…?

Answer 30

thermal energy

Question 31

Noble gases are made up of…?

Answer 31

six nonmetals

Question 32

Metalloid are also called…?

Answer 32

semiconductors

Question 33

Actinides are all…?

Answer 33

Radioactive

Question 34

Most transition metals are…?

Answer 34

Shiny

Question 35

The most common element in the Boron Group is…?

Answer 35

aluminum

Question 36

an element named after a scientist

Answer 36

Mendelevium

Question 37

an element named after a state

Answer 37

Californium

Question 38

an element that makes about 80% of the air around us

Answer 38

Nitrogen

Question 39

an element that is a colorless gas

Answer 39

Hydrogen

Question 40

an element found in teeth and bones

Answer 40

Calcium

Question 41

an element that makes up the compounds of proteins, fats and carbohydrates.

Answer 41

Carbon

Question 42

the elements used to make the compound Ammonia

Answer 42

Nitrogen and Hydrogen

Question 43

elements used to make computer chips

Answer 43

Germanium and Silicon

Question 44

an element needed for substances to burn

Answer 44

Oxygen