Channel 4 Learning


Homework High
Science
Science > Chemistry > Chemical reactions

We've found 1562 questions on this subject

Next 10 questions

Questions 1 - 10

Click on a question to see a full answer

1. Describe in words how sulphur is made into sulphur trioxide?

2. Hi, I was just wondering if you could help me with balancing ionic equations. I really don't understand.

3. Why is water neutral?

4. What methods can be used to prevent rusting? What does sacrificial protection and galvanising mean?

5. What methods can be used to prevent rusting? What does sacrificial protection and galvanising mean?

6. Hi. Could you help me with this question. A solution of carbon dioxide is acidic. Explain why the pH will increase when the solution is heated.

7. When you release the same amount of energy from coal, gas and oil, different amounts of carbon dioxide are produced. Use the information below to explain why. Coal is mainly carbon. North Sea gas is mainly methane. Oil is made from molecules similar to the one shown. Thanks very much for your help

8. When you release the same amount of energy from coal, gas and oil, different amounts of carbon dioxide are produced. Use the information below to explain why. Coal is mainly carbon. North Sea gas is mainly methane. Oil is made from molecules similar to the one shown. Thanks very much for your help

9. When you release the same amount of energy from coal, gas and oil, different amounts of carbon dioxide are produced. Use the information below to explain why. Coal is mainly carbon. North Sea gas is mainly methane. Oil is made from molecules similar to the one shown. Thanks very much for your help

10. Could you please explain the differences in the way in which the electric charge moves in the copper sulphate solution and in the metal wiring between the electrodes and power supply during electrolysis. I also need to know how to calculate charge, and how to calculate the mass of copper deposited in an electrolysis experiment. Thanks Hayley.

Page | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | 156 | 157 |

Next 10 questions

Links
Channel 4 Science site

Science in Medicine
Leading edge medical science.

Science in Engineering
From transforming scrap to the frontiers of knowledge.