Across
- 5. These are the substances formed after or due to the chemical reaction.
- 6. These are a group of atoms of different elements. They can join together or be bonded by a chemical reaction.
- 7. This is a good method for separating dissolved substances.
- 9. The table of elements
- 10. Water that collects in the form of droplets when the humid air is in contact with it.
- 11. This reacts with oxygen in the air to produce non-metal oxides.
- 12. This is the change of state when liquid becomes solid. Example: this occurs when water turns into ice.
- 13. This is the movement of gas or solute molecules from a region of higher concentration to a region of lower concentration until they are equal.
- 14. A ____________ is when two liquids react to make a solid.
- 16. These contain molecules of the same type.
- 18. This is a change of state where solid turns into liquid state. Example: this occurs when ice changes to water.
- 20. This is the amount of solid that can dissolve in a solvent till it becomes saturated or concentrated.
Down
- 1. _____________ is another name for burning.
- 2. This is the reaction between iron and sulphur.
- 3. ____________ is made from different substances that are not chemically joined.
- 4. _______________ is a method for separating a liquid from a mixture of two or more liquids.
- 8. What metal has the highest reaction in the reactivity series?
- 15. These are substances that undergo change in a chemical reaction.
- 17. This is the change of state from liquid to gas or vapour.
- 19. Least reactive metal in the Reactivity series.