GCSE Edexcel Chemistry Group 0 - Noble Gases: 2. Complete the following senten

Question

2. Complete the following sentences.

(i) The name given to group 7 in the periodic table is ________________.

(ii) The name given to group 0 in the periodic table is ________________.

(b) Which of the following rows gives the colours of the group 7 elements chlorine and bromine at room temperature?

| chlorine    | bromine     |
|-------------|-------------|
| A    | red-brown  | purple      |
| B    | yellow-green| grey        |
| C    | yellow-green| red-brown   |
| D    | grey       | red-brown   |

(c) Figure 2 shows the melting and boiling points of bromine and iodine.

| element | melting point in °C | boiling point in °C |
|---------|---------------------|---------------------|
| bromine | -7                  | 59                  |
| iodine  | 114                 | 184                 |

Using the information in Figure 2, which row shows the physical states of these elements at 50 °C?

| bromine | iodine |
|---------|--------|
| A       | liquid | gas    |
| B       | solid  | liquid |
| C       | gas    | solid  |
| D       | liquid | solid  |

(d) The densities of some elements in group 0 are shown in Figure 3.

| name    | density in g cm⁻³ |
|---------|-------------------|
| helium  | 0.15              |
| neon    | 1.2               |
| argon   | 1.4               |
| krypton |                   |
| xenon   | 3.5               |

Figure 3

Use the information in Figure 3 to suggest the density of krypton.

density of krypton = _______________ g cm⁻³

(e) For many years, argon was used to fill filament light bulbs.
A filament light bulb is shown in Figure 4.

Figure 4

When the bulb is in use, the metal filament becomes extremely hot.
Explain why argon, rather than air, was used to fill light bulbs.

2. Complete the following sentences - Edexcel - GCSE Chemistry - Question 2 - 2019 - Paper 1

Worked Solution & Example Answer:2. Complete the following sentences - Edexcel - GCSE Chemistry - Question 2 - 2019 - Paper 1

Complete the following sentences. (i) The name given to group 7 in the periodic table is ________________.

(ii) The name given to group 0 in the periodic table is ________________.

Which of the following rows gives the colours of the group 7 elements chlorine and bromine at room temperature?

Using the information in Figure 2, which row shows the physical states of these elements at 50 °C?

Use the information in Figure 3 to suggest the density of krypton.

Explain why argon, rather than air, was used to fill light bulbs.

Join the GCSE students using SimpleStudy...