Brainscape's Knowledge GenomeTM

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


See full index

Nat 5 2020-2022 > B. Made in the stars > Flashcards

B. Made in the stars Flashcards

1
Q

What is meant by an element?

A

A substance with only one type of atom.

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

Approximately how many elements are there?

A

100

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

Where are elements listed?

A

On the periodic table

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

Name 3 ways in which the periodic table can be split into categories

A
  1. Metal and non-metals
  2. Solids, liquids and gases
  3. Naturrally occurring and man-made
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Approx how many elements are naturally occurring?

A

92

Numbers 1 to 92

Hydrogen to Uranium

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

Name the 2 liquid elements at room temperature

A

Bromine

Mercury

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

How many elements are gases at roomp temperature?

A

11

(Be able to name 2 of them at least)

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

Where are elements made?

A

In stars

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

How are elements made?

A

By nuclear fusion

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

What is meant by a “group” in the periodic table?

A

Elements in the same group have similar properties

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

What is meant by a “period” in the periodic table?

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

What name is given to the group 1 metals?

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

Why are group 1 metals known as alkali metals?

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

What are some properties of the alkali metals?

A

Soft

Reactive

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

Why are the alkali metals stored under oil?

A

To prevent contact (and reaction) with water and oxygen.

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

What name is given to the group 7 elements?

A
17
Q

What name is given to the group 8 elements?

A
18
Q

Give some uses for Helium

A
19
Q

Give some uses for Neon

A
20
Q

Give some uses for Argon

A
21
Q

Give some uses for Krypton

A
22
Q

How can we test for the presence of elements?

A

Chemical tests

23
Q

What are the flame tests colours for group 1

A
24
Q

What are the flame test colours for group 2?

A
25
Q

What is the test for hydrogen?

A
26
Q

How can we produce hydrogen gas in the lab?

A

By reacting alkali metals or calcium with water

27
Q

What is the test for oxygen?

A
28
Q

What are the 2 main reactions of oxygen?

A
29
Q

What is the test for chlorine gas?

A
30
Q

What are the main uses of chlorine?

A
31
Q

What is “electrolysis”?

A

The breaking apart of a compound using electricity

32
Q

What kind of power supply is needed for electrolysis?

A

DC

(Direct Current)

33
Q

Why do we use graphite electrodes?

A
  1. Graphite conducts electricity
  2. Graphite is unreactive
34
Q

At which electrode did the copper form when copper chloride was electrolysed?

A

The negative electrode

35
Q

What are the 3 particles in an atom?

A

Protons

Neutrons

Electrons

36
Q

What are the charges on each particle in an atom?

A

Protons +1

Electrons -1

Neutrons 0

39
Q

Which 2 particles have a mass of 1?

A

Protons and Neutrons

40
Q

Why are atoms neutrally charged?

A

They have equal numbers of protons and electrons

41
Q

What does the group number tell you?

A

The number of outer electrons

Nat 5 2020-2022 (18 decks)

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