Elements, Compounds And Mixtures Flashcards

1
Q

An element

A

Contains only one type of atom.

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

A compound

A

Contains 2 or more types bonded together.

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

A mixture

A

Contains 2 or more types not bonded together.

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

Nucleus

A

Centre of a atom. Contains protons and neutrons.

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

Proton

A

Positively charged.

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

Neutron

A

Found in nucleus. It doesn’t have charge, so it’s neutral.

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

Electron

A

Orbit around nucleus. It’s negatively charged.

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

Electron shell

A

Electrons orbit the nucleus in a circle called an electron shell.

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

Mass number

A

Number of protons+neutrons

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

Atomic number

A

Number of protons/electrons.

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

Isotope

A

Atoms of the same element with different number of neutrons. They have same chemical properties but different physical.

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

Alloy

A

A mixture of metal and at least one other element. Finally alloy may have different properties to the original metal. Atoms are different sizes, so cannot slide over each other.

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

Steel

A

Metal+carbon

It makes it much stronger.

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

Pure metal

A

Atoms are arranged in rows. They can easily slide over each other.

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

Ducktile metals

A

Can be pulled/stretched into wire.

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

Malleable

A

Can be modeled/shaped.

17
Q

Displacement reaction

A

The metal in a compound is replaced with more reactive metal to form new compound.

18
Q

Ore

A

Naturally occurring mineral containing a valuable constituent for which is mined. Examples aluminum, copper, sodium, iron, silver

19
Q

Thermal decomposition

A

Using heat to break down.

20
Q

Atoms have no overall…

A

electrical charge.

21
Q

The relative atomic mass of an element

A

The average mass of the atoms of an element compared with carbon-12(relative atomic mass exactly 12)