Question | Answer |
What does decompose mean? | It is when chemicals split up. |
What is a physical change? | It is when no new substances are formed. |
Physical changes are ____. | Reversible. |
Give an example of physical changes. | Ice into water. |
Chemical reactions are _____. | Irreversible. |
How do you create a squeaky pop? | Hydrogen and a lit splint. |
What is usually used to power big trucks? | Diesel. |
What are reactants? | The multiple elements used in a chemical reaction. |
Rust is an example of _____. | Corrosion. |
What is dry ice? | It is carbon dioxide as a solid. |
What process does dry ice skip? | Melting. |
What color does lime water turn into after shaking it with carbon dioxide. | Milky. |
Some fireworks displays use ______. | Dentonators. |
Air is__ oxygen. | 20%. |
If you put a lit split in an jar of pure oxygen it will____. | Glow. |
Any metal mixed with oxygen will be called ____. | Oxides. |
Magnesium + Oxygen ---> | Magnesium oxide. |
What is the creation from the reactants called? | Product. |
Name the elements in the fire triangle. | Oxygen,Fuel and Heat. |
Burning oil will burn more furiously if ___ is added. | Water. |