Natural Sciences and Technology Grade 6-A - Thunderbolt Kids
Natural Sciences and Technology Grade 6-A - Thunderbolt Kids Natural Sciences and Technology Grade 6-A - Thunderbolt Kids
RESULTS: The eect of temperature on dissolving Situation Salt in hot water Salt in tap water Salt in ice water Time to dissolve (in seconds) QUESTIONS: 1. What did we compare in this investigation? 2. Name three things that were the same about the three situations. 162 Matter and Materials
3. What did we change in this investigation? 4. We measured the temperature of the water. What else did we measure? 5. In which situation did the salt dissolve the fastest? 6. Complete the conclusion below by filling in the missing word or words. CONCLUSION: The salt crystal dissolved ___________ in the hot water than the cold water. Temperature aects the rate of dissolving. When we increase the temperature of the solvent, the rate at which the solute dissolves ____________. Extension question: Why do you think the salt dissolves faster in the hot water? In the second investigation we will explore whether coarse salt dissolves faster than fine salt. What do you expect? Chapter 4. Dissolving 163
- Page 121 and 122: In the next table there are 3 pictu
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- Page 127 and 128: We have learnt that materials exist
- Page 129 and 130: A mixture of dierent coloured jelly
- Page 131 and 132: 3. Separate the mixture into a pile
- Page 133 and 134: 2. Draw a picture of the mixture. 3
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- Page 137 and 138: INSTRUCTIONS: 1. Place 10 scoops of
- Page 139 and 140: Picture of mixture INSTRUCTIONS (Pa
- Page 141 and 142: REVISION: 1. What is amixture? 2. L
- Page 143 and 144: Now that we know more about mixture
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- Page 147 and 148: What is asolution? When two substan
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- Page 153 and 154: In the previous chapter, we saw how
- Page 155 and 156: 4. Which method do you think works
- Page 157 and 158: 3. Complete the following sentences
- Page 159 and 160: dissolved limestone can crystallise
- Page 161 and 162: KEY CONCEPTS • A solution is aspe
- Page 163 and 164: 4. What was the mixture of sugar an
- Page 165 and 166: It was quite dicult in the beginnin
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- Page 175 and 176: RESULTS: The eect of grain size on
- Page 177 and 178: INVESTIGATION: Does stirring increa
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- Page 181 and 182: REVISION: 1. What are the 3factors
- Page 183 and 184: We have learnt a lot about solution
- Page 185 and 186: ACTIVITY: Thinking about pollution
- Page 187 and 188: 8. How do you think oil ends up in
- Page 189 and 190: Wetlands are not necessarily wet th
- Page 191 and 192: INSTRUCTIONS: 1. Drill ahole in the
- Page 193 and 194: QUESTIONS Do you remember studying
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- Page 197 and 198: Water is very important for us and
- Page 199 and 200: QUESTIONS 1. What does 'clean water
- Page 201 and 202: ACTIVITY: Cleaning water in astill
- Page 203 and 204: Filtering is agood way of removing
- Page 205 and 206: 2. What size and shape will your fi
- Page 207 and 208: MAKE: Now that you have a design, i
- Page 209 and 210: How is water cleaned by municipalit
- Page 211 and 212: STEP 3: AERATION The raw water now
- Page 213 and 214: 6. Name the 5steps in the water tre
RESULTS:<br />
The eect of temperature on dissolving<br />
Situation<br />
Salt in hot water<br />
Salt in tap water<br />
Salt in ice water<br />
Time to dissolve (in<br />
seconds)<br />
QUESTIONS:<br />
1. What did we compare in this investigation?<br />
2. Name three things that were the same about the three<br />
situations.<br />
162 Matter <strong>and</strong> Materials
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