Y7 Chemistry Elements Compounds and Mixtures

Question 1

metals are generally...

Accepted Answer

solid at room temperature

Question 2

I'm used to keep pools clean. I've probably stung your eyes at least once before now...

Accepted Answer

chlorine

Question 3

Which of these is liquid at room temperature?

Accepted Answer

Mercury

Question 4

what are the two elements in water?

Accepted Answer

Hydrogen and Oxygen

Question 5

What is the chemical symbol for water?

Accepted Answer

H2O

Question 6

Which of these is a metal?

Accepted Answer

Sodium

Question 7

I am also often used in jewellery, but I'm not gold...

Accepted Answer

Palladium, Silver, Platinum, Carbon (diamond)

Question 8

Which of these is a pure substance?

Accepted Answer

Calcium

Question 9

What is the elemental symbol for Carbon?

Accepted Answer

C

Question 10

All stuff (matter) is made up of

Accepted Answer

particles

Question 11

I am the most abundant element in the universe. I am...?

Accepted Answer

Hydrogen

Question 12

I conduct heat well. I am shiny with a high melting point. Which element am I?

Accepted Answer

Iron

Question 13

I am gas at room temp. If you breathe me in your voice sounds really high. What am I?

Accepted Answer

Helium

Question 14

I am an unreactive metal commonly used in jewellery...

Accepted Answer

Gold

Question 15

I conduct heat well. I am shiny. I am liquid at room temp. What am I?

Accepted Answer

Mercury

Question 16

Which of these is not a metal?

Accepted Answer

chlorine

Question 17

Which of these is a mixture?

Accepted Answer

Air

Question 18

A clear gas normally, I turn bright red when used in lights on "kebab shop" signs...

Accepted Answer

Neon

Question 19

The chemical symbol for water tells you that there are...

Accepted Answer

2 hydrogen atoms and 1 oxygen atom

Questions 19