7F-Chemical Reaction Word Scramble
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Question | Answer |
How can we know that it is a chemical reaction? | When that object or substance is change color or gas given off or energy has changed and it's produce a new substance. |
What word decribed a metal turning into rust? | Corrosion |
What do we get when limestone and acids react together? | Carbon Dioxide |
How can we form oxide? | When metal used in fireworks will burn in oxygen with a particular colour. |
Metal+Acid-> ? | Hydrogen gas and metal salt |
Magnesium+Hydrochloric Acid-> ? | Hydrogen gas and magnesium cholride |
What substance and gas are in a fire triangle? | Substance that burns, enery and oxygen |
What is in a fire extinguisher to cool the electrical fires? | Carbon Dioxide |
What is another word for burning? | combustion |
Fuel+oxygen->? | Carbon dioxide and water |
methane+oxygen-> ? | carbon dioxide and water |
What is hydrocarbon? | When any chemical that is made of only carbon and hydrogen. |
What is decompose? | When chemical split up. |
What made up starch? | carbon, hydrogen and oxygen. |
Can we split water into hyrogen and oxygen and how? | Yes, using electrical energy. |
How can we make the iron corrode more quickly? Why? | We use acud ran because it contains nitrice or sulphuric acids which will made the iron corrode more quickly. |
How can we test if that gas is carbon dioxide? | Using a lighted splint, when the lighted splint put into carbon dioxide, the flame will go out straight away. |
What is in water? | Oxygen and hydrogen. |
carbon dioxide = ...+... ? | carbon + oxygen |
What is the other way to make sure that gas is carbon dioxide? | Limewater test, if carbon dioxide is mixed with lime water, it will go milky, if it's not carbon dioxide, it will stay clear. |
What made up sulphuric acid? | Oxygen, sulfur and hydrogen |
Iron+sulphuric acid->? | Iron sulphate + Hydrogen gas |
Is it the best way to cool the fire by using a fan? | No, the oxygen will make the fire bigger. |
What substance form when magnesium is burn in the air? | Magnesium Oxide. |
Created by:
KhanhDo
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