Brainscape's Knowledge GenomeTM

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


See full index

Science (Chemistry) > Metals & Reactivity Series > Flashcards

Metals & Reactivity Series Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Biology 101 flashcards Organic Chemistry 101 flashcards
1
Q

Potassium + Water

A

Potassium hydroxide + Hydrogen

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

Metal + 2HCl

A

Metal Cl2 + H2

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

Magnesium observations with acid

A 
Floats
Moves
Fizzes 
Disappears
Exothermic
Squeaky pop
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Zinc observations with acid

A

Small bubbles
Exothermic
Squeaky pop

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

Aluminium observations with acid

A

Needs gentle heat
Fizzing
Moves
Squeaky

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

Copper observations in acid

A

Heat gently

Gas given off

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

Iron observations in acid

A

Heat gently
Very little gas given off
Squeaky pop

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

General equation for metal + acid experiment

A

Metal + acid - salt + hydrogen

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

What is a displacement reaction?

A

When a more reactive metal takes the place of a less reactive metal in its solution

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

How do we structure a word equation for a displacement reaction?

A

MRM + LRMSO4 - MRMSO4 + LRM

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

What is the reactivity series order?

A 
K
Na
Ca
Mg
Al
Zn
Fe
Cu
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is electrolysis?

A

When electricity is used to decompose an ionic compound

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

What is bauxite?

A

Purified to form aluminium oxide

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

Why does the carbon anode have to be replaced periodically?

A

It wears away due to reaction with oxygen

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

How does aluminium become an ion?

A

Positive aluminium ions (cations) move towards negative electrode (cathode), where they gain 3 electrons to become aluminium atoms. The reaction at the cathode is Al3+ + 3e - Al.
The negative oxide ions (anions), move towards positive electrode (anode), where they lose 2 electrons to become oxygen atoms. The reaction at the anode is 2O2- - 4e - O2.

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

Why is the extraction of aluminium expensive?

A

Cost of electricity is high

High temperature is needed to keep aluminium oxide molten

17
Q

What are the benefits of recycling?

A

Saves resources - preserves stock of bauxite ore
Saves energy
Prevents waste from going to landfill - unused Al would lie in landfill sites
Costs less - more energy efficient to recycle aluminium

Science (Chemistry) (9 decks)

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