Science EOY exam revision cards
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22 questions
| 🇬🇧 | 🇬🇧 |
| Who created the periodic table? | Dmitri Mendeleev |
| Why did he leave some element spaces blank? | Mendeleev knew that more elements would be discovered, so he left gaps in the table for the new elements. |
| What is the most reactive element with water? | Francium, a drop of water can cause a catastrophic explosion. It has been tested but only out in the ocean, hundreds of miles away from any land or people. |
| What is the word equation for aerobic respiration? | Oxygen+ Glucose= Carbon Dioxide+Water |
| What is the word equation for anaerobic respiration? | Glucose=Lactic Acid |
| What factors are in the fire triangle? | Oxygen Heat Fuel |
| What is smog? | Smog is a harmful mixture of pollutants |
| What does a catalytic converter do? | A Catalytic Converter filters out harmful pollutants from car exhausts |
| What is a greenhouse effect? | The Greenhouse effect is an effect caused by carbon dioxide in the atmosphere trapping the suns rays on the earth like a greenhouse |
| What is the word equation for corrosion? | Tin+oxygen= tin oxide |
| What is an alloy? | An alloy is a blend of a metal and an other element. e.g. stainless steel is made by adding iron and carbon, chromium, nickel exc. to it to create a alloy. |
| Why are alloys used? | Alloys are used as they are stronger than pure metal, and have better qualities for everyday use, like copper- conducting electricity |
| When a rock is repeatedly experiencing weather changes what happens to it? | When the rock is heated, it expands and contracts when it cools, this can cause cracks to form if this action is repeated over and over again. |
| When water gets into rocks what happe ns? | Water expands as it freezes, forcing the cracks to expand. This is called freeze-thaw action |
| What happens when plant roots get into the cracks of rocks? | The roots cause the cracks to get wider and then the rock eventually breaks in half. |
| What happens during erosion? | Pieces of rock get broken up by weathering when they get moved away. This is called erosion. |
| What is abrasion? | Abrasion is when the rock segments knock against each other and wear down, due to the friction. |
| How is the particles arranged in a liquid? | The particles are loosely organised, and are fairly strong. |
| How is the particles arranged in a gas? | The particles are not organised, and are not strong. |
| How is the particles arranged in a solid? | The particles are in neat straight lines, and are very strong. |