section 4

Question 1

What can metal substances be classified by?

Answer 1

Their melting point, density, hardness, and electrical/thermal conductivity

Question 2

What is the definition of metal?

Answer 2

Elements that are conductors of electric currents and heat that tend to be bendable and shiny

Question 3

What are Metal’s physical properties?

Answer 3

Luster, malleability, ductility, and conductivity

Question 4

What is the definition of malleable?

Answer 4

A material that can be hammered or rolled into other shapes

Question 5

What is the definition of ductile?

Answer 5

A material that can be pulled out or drawn into a wire

Question 6

What is the definition of thermal conductivity?

Answer 6

the ability to transfer heat

Question 7

What is the definition of electrical conductivity?

Answer 7

the ability to transfer electric current

Question 8

What is the definition of reactivity?

Answer 8

the ease and speed of 2 substances reacting with eachother

Question 9

How do metals react?

Answer 9

By losing electrons

Question 10

What is the definition of corrosion?

Answer 10

gradual wearing away due to a chemical reaction

Question 11

As you move across the Periodic table..

Answer 11

a family’s properties gradually change

Question 12

From left to right across the Periodic table the reactivity of metals tend to…

Answer 12

decrease

Question 13

What is the definition of Alkali Metals?

Answer 13

reactive, combined compounds in nature that are in group 1 from Lithium to Francium

Question 14

What is the definition of Alkali Earth metals?

Answer 14

Less reactive, combined elements that are fairly hard, gray-white, and conductors of electricity located in group 2

Question 15

What is the definition of transition metals?

Answer 15

hard and shiny, colorful compounds that are conductors of electricity in groups 3-12

Question 16

Metals in mixed group are never…

Answer 16

fround uncombined in groups 13-15

Question 17

Lanthanides are located…

Answer 17

at the top row, below the table

Question 18

What is the definition of lanthanides?

Answer 18

a mixture with more common metals to create alloys

Question 19

What is the definition of alloys?

Answer 19

a mixture of a metal with one or more elements, usually a different metal

Question 20

Different lanthanides are found in nature are always..

Answer 20

combined with other elements

Question 21

What is the definition of actinides?

Answer 21

elements located below lanthanides that occur naturally on Earth with an unstable nuclei that breaks quickly into smaller nuclei

Question 22

What is the definition of synthetic elements?

Answer 22

elements with an atomic number higher than 92 that are not found naturally on Earth that have to be synthesized to be made

Question 23

Scientists make synthetic elements by…

Answer 23

forcing nuclear particles to crash into one another

Question 25

If a fast nuclei crashes into another element's nuclei with enough energy...

Answer 25

Particles can combine into one nucleus

Question 26

More powerful accelerators...

Answer 26

Make new elements and increases their atomic number

Question 27

What is the definition of a nonmetal?

Answer 27

an element that lacks most of the properties of the metal, that are common elements on Earth

Question 28

Most nonmetals are..

Answer 28

poor conductors of electric current and heat

Question 29

Nonmetal's atoms...

Answer 29

gain/share electrons when reacting with other atoms

Question 30

the reaction between nonmetals and metals makes...

Answer 30

electrons move metal atoms to nonmetal atoms

Question 31

nonmetals form compounds with other nonmetals which makes...

Answer 31

their atoms share electrons and bond to make molecules

Question 32

What is the definition of the carbon family?

Answer 32

a group of elements who's atoms gain, lose, or share 4 electrons when reacting with other elements

Question 33

molecules containg long chains of carbon atoms...

Answer 33

are found in all living things

Question 34

Fuels that burn to yield energy...

Answer 34

contain carbon

Question 35

What is the definition of the nitrogen family?

Answer 35

elements located in group 15, that contain 2 nonmetals that gain or share 3 electrons

Question 36

What is the definition of diatomic molecule?

Answer 36

a molecule consisting of 2 atoms

Question 37

What is the definition of nitrogen fixation

Answer 37

certain bacterias that can use nitrogen to form compounds

Question 38

What is the definition of the oxygen family

Answer 38

elements located in group 16, containing 3 nonmetals who gain or share 2 electrons

Question 39

because oxygen is highly reactive..

Answer 39

they're abe to combine with every other element

Question 40

The Halogen family is located...

Answer 40

in group 17

Question 41

What is the definition of halogens?

Answer 41

elements that mean "salt forming" who's atoms gain/share one electrong

Question 42

All halogens...

Answer 42

are highly reactive, uncombined elements, and dangerous to humans

Question 43

An intert Gas's atoms...

Answer 43

don't gain, lose, or share electrons

Question 44

Inert gases tend to be...

Answer 44

unreactive

Question 45

Hydrogen's atoms...

Answer 45

have 1 proton/electron, some neutrons who's properties are too different from other elements

Question 46

What is the definition of semimetals?

Answer 46

elements with properties of metals but also have properties that are typical of nonmetals that are brittle, hard, and somewhat reactive

Question 47

All semimetals..

Answer 47

are solids at room temperature

Question 48

The most useful property of the semimetals is..

Answer 48

their varying ability to conduct electric current

Question 49

Electrical conductivity of a semimetals can depend on..

Answer 49

temperature, exposure to light, or the presence of impurities

Question 50

What is the definition of semiconductors?

Answer 50

substance that can conduct electric current under some conditions but not under other conditions (ex. semimetals)