⚖️ Conservation of Matter
Explore the fundamental principle of conservation of matter in Grade 5 Physics. This quiz focuses on understanding that matter cannot be created or destroyed, only rearranged or transformed during both physical and chemical changes. You'll compare mass before and after changes, understand state transitions, and apply conservation principles to real-world scenarios. **What you'll learn:** - Matter is never created or destroyed in physical and chemical changes - Mass remains constant before and after transformation - Different states of matter can change without loss of total mass - Conservation of matter applies to all observable phenomena
Questions in this quiz
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- Question 1
A 50 g block of ice is placed in a cup and left to melt. After it completely melts into water, what is the total mass of the water?
- Question 2
When wood burns in a fireplace, the total mass of all the matter involved (wood, oxygen from air, smoke, and ash) after burning equals the total mass before burning.
- Question 3
A metal wire with a mass of 30 g is cut into three smaller pieces. What is the total mass of all three pieces combined?
- Question 4
Which scenario best demonstrates the conservation of matter?
- Question 5
When ice melts into water and then water evaporates into water vapor, the total mass of matter decreases with each change.
- Question 6
A balloon is filled with 2 liters of air and sealed. The balloon is then squeezed so that the air is compressed into 1 liter. What happens to the total mass of the air inside?
- Question 7
A candle burns for 10 minutes and becomes noticeably shorter and lighter. Where did the mass go?
- Question 8
Two cups of water, each with a mass of 200 g, are combined into one larger cup. What is the total mass of the combined water?
- Question 9
During a chemical change like rusting, the total mass of the iron plus oxygen that reacted equals the total mass of the rust produced.
- Question 10
A piece of chalk is ground into a fine white powder. How does the total mass of the powder compare to the original chalk?
- Question 11
A chemical equation shows that 2 molecules of hydrogen gas () plus 1 molecule of oxygen gas () produce 2 molecules of water (). This is an example of which principle?
- Question 12
If you heat a sealed container of water until it turns to steam, the total mass of the water and steam together increases.
- Question 13
A student mixes 150 g of salt with 300 g of water to make salt water. If no liquid spills, what should be the total mass of the salt water mixture?
- Question 14
A rock is broken into 100 smaller pieces by repeated hammering. How does the total mass of all 100 pieces compare to the original rock's mass?
- Question 15
During an exothermic reaction (a reaction that releases heat and light), the total mass of the reactants is greater than the total mass of the products.
- Question 16
A gardener combines 25 kg of soil, 5 kg of compost, and 10 kg of mulch to create a planting bed. What is the total mass of the mixture?