metals Flashcards

(34 cards)

1
Q

free electrons that are able to move across the metal structure

A

delocalised electrons

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

when a positive metal nuclei attract delocalised electrons

A

metallic bond (very strong)

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

do metals have high or low melting points

A

they have vert high melting and boiling points

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

why are metals good conductors

A

the delocalised electrons move easily through the metal

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

what is malleability

A

when the metal can be shaped or bent easily

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

what is an alloy

A

a mixture of two or more metals

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

what is an advatage of an alloy

A

they have improved properties than regular metals have such as bronze brass and steel

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

metal + acid —>

A

salt + hydrogen

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

what reaction releases heat

A

exothermic

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

a metal + acid is what kind of reaction

A

redox

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

in a metal + acid reaction is the metal reduced or oxidised

A

oxidised

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

hydrogen ions get reduced to what

A

hydrogen gas

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

any metal below (a) will not react with (a)

A

hydrogen

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

metal + oxygen—->

A

metal oxide

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

what metal reacts with air the fastest

A

potassium

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

what is effervescence

17
Q

as you (descend or ascend) group 1 the metals become more reactive

18
Q

the most unreactive metal is …

19
Q

what happens during a displacemnt reaction

A

the more reactive metal will displace the less reactive metal from a solution of metal ions

20
Q

what indicates a displacemt reaction has occurred

A

a colour change

21
Q

what does oil stand for

A

oxidation
is
loss

22
Q

what does rig stand for

A

reduction
is
gain

23
Q

oxidation is

A

loss of electrons

24
Q

reduction is

A

gain of electrons

25
page 10 in the data book show
reduction reactions
26
in reduction reaction the electrons will appear on the
left of the arrow
27
in oxidation reactions the elctrons will appear on the
right of the equation
28
do redox equations contain electrons
no
29
potassium sodium lithium calcium react with what
water
30
``` magnesium aluminium zinc iron tin lead ``` react with what
acid
31
copper mercury silver react with what
oxygen
32
in electrosis the metals always get
reduced
33
in a molten or aqueous solution the the ions are
free to move
34
why is a dc current used in electrosis
it flows in one direction ( so the ions and atoms are only drawn to one either positive or negative carbon rod)