Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

School study > section 4 > Flashcards

section 4 Flashcards

1
Q

What can metal substances be classified by?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the definition of metal?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are Metal’s physical properties?

A

Luster, malleability, ductility, and conductivity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the definition of malleable?

A

A material that can be hammered or rolled into other shapes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the definition of ductile?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the definition of thermal conductivity?

A

the ability to transfer heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the definition of electrical conductivity?

A

the ability to transfer electric current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the definition of reactivity?

A

the ease and speed of 2 substances reacting with eachother

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do metals react?

A

By losing electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the definition of corrosion?

A

gradual wearing away due to a chemical reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

As you move across the Periodic table..

A

a family’s properties gradually change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

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

A

decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the definition of Alkali Metals?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the definition of Alkali Earth metals?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the definition of transition metals?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Metals in mixed group are never…

A

fround uncombined in groups 13-15

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Lanthanides are located…

A

at the top row, below the table

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the definition of lanthanides?

A

a mixture with more common metals to create alloys

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the definition of alloys?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Different lanthanides are found in nature are always..

A

combined with other elements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the definition of actinides?

A

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

22
Q

What is the definition of synthetic elements?

A

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

23
Q

Scientists make synthetic elements by…

A

forcing nuclear particles to crash into one another

24
Q
A
25
Q

If a fast nuclei crashes into another element’s nuclei with enough energy…

A

Particles can combine into one nucleus

26
Q

More powerful accelerators…

A

Make new elements and increases their atomic number

27
Q

What is the definition of a nonmetal?

A

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

28
Q

Most nonmetals are..

A

poor conductors of electric current and heat

29
Q

Nonmetal’s atoms…

A

gain/share electrons when reacting with other atoms

30
Q

the reaction between nonmetals and metals makes…

A

electrons move metal atoms to nonmetal atoms

31
Q

nonmetals form compounds with other nonmetals which makes…

A

their atoms share electrons and bond to make molecules

32
Q

What is the definition of the carbon family?

A

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

33
Q

molecules containg long chains of carbon atoms…

A

are found in all living things

34
Q

Fuels that burn to yield energy…

A

contain carbon

35
Q

What is the definition of the nitrogen family?

A

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

36
Q

What is the definition of diatomic molecule?

A

a molecule consisting of 2 atoms

37
Q

What is the definition of nitrogen fixation

A

certain bacterias that can use nitrogen to form compounds

38
Q

What is the definition of the oxygen family

A

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

39
Q

because oxygen is highly reactive..

A

they’re abe to combine with every other element

40
Q

The Halogen family is located…

A

in group 17

41
Q

What is the definition of halogens?

A

elements that mean “salt forming” who’s atoms gain/share one electrong

42
Q

All halogens…

A

are highly reactive, uncombined elements, and dangerous to humans

43
Q

An intert Gas’s atoms…

A

don’t gain, lose, or share electrons

44
Q

Inert gases tend to be…

A

unreactive

45
Q

Hydrogen’s atoms…

A

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

46
Q

What is the definition of semimetals?

A

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

47
Q

All semimetals..

A

are solids at room temperature

48
Q

The most useful property of the semimetals is..

A

their varying ability to conduct electric current

49
Q

Electrical conductivity of a semimetals can depend on..

A

temperature, exposure to light, or the presence of impurities

50
Q

What is the definition of semiconductors?

A

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

School study (24 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions