MC	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

A house made of toy blocks is weighed. It is taken apart and each block weighed separately. If the weight of all the blocks is added, what will it total?

a. A little less than the weight of the house.

b. The same as the house.

c. A little more than the weight of the house.

d. It would depend on how large the house was.

Correct Answer: b

MC	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Sarah and Jake were each given a ball of clay of the same weight. Both students used all their clay to make an object. Sarah rolled hers into a ball; Jake made a long, skinny rope. What is the weight of the clay figures now?

a. SarahÕs weighs more because it is round.

b. JakeÕs weighs more because it is long.

c. There is no way of knowing.

d. The figures would be equal.

Correct Answer: d

E	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Maren made a toy robot using things she found around her house. It weighed 750 grams. If she takes it apart and weighs all the separate pieces, will they weigh more, less, or the same as the original toy robot? Explain why.

Correct Answer:

The robot should weigh the same together as it does in pieces because the weight of an object is always equal to the sum of its parts.

MC	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Water is boiled in a flask with a balloon over the top. As the water heats, the balloon expands. What has happened to the weight of this flask and balloon in this experiment?

a. It has increased as the balloon expands.

b. It has decreased as the water boiled away.

c. It has stayed the same.

d. It is unpredictable because the balloon is flexible.

Correct Answer: c

MC	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Stuart measures 10 grams of water into an ice cube tray and then freezes it. A day later he takes the ice cube out of the tray and notices it is larger than before. What will it weigh?

a. 10 grams

b. 11 grams

c. 20 grams

d. impossible to know

Correct Answer: a

E	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Amy measured 50 ml of water into a container. It weighed 46 grams. After being frozen for a day, how much will it weigh? Explain why.

Correct Answer:

The water will still weigh 46 grams because it is still the same matter and will have the same weight.

E	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

A student measures the weight of an ice cube and then lets it melt. What would you expect the weight of the water produced to be? Why?

Correct Answer:

The weight would be the same as the ice cube. The particles of ice have change form but none of them have gone anywhere.

P	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Title: Same or Different?

Activity Description

Students will design an experiment to determine if things that are frozen weigh the same as they are when unfrozen.

Materials

Items to be frozen: freezer pops, bananas, water in baggie, balance or scale, worksheet or paper to write on.

Time Needed

20 ∆ 45 minutes

Procedure

1. Students will be asked to design an experiment that will compare the weight of things before, during, and after they are frozen to determine if the weight changes.
2. Students will work together in groups to design the experiment.
3. They must include their question, hypothesis, steps, data, and conclusion.
4. They may choose one of the items provided to use for their experiment.

Scoring Rubric

0 No attempt made.

1 Filled in one of the required items.

2 Filled in two of the required items, measurements are not written down.

3 Filled in three of the required items, including measurements.

4 Filled in four of the required items, measurements are accurate and labeled.

5 Filled in all of the required items, measurements are accurate and labeled.

Name ________________________________

Same or Different?

Create an experiment to compare the weight of something before it is frozen, while it is frozen, and after it is frozen.

Question:

Hypothesis:

Steps:

Item

Weight Unfrozen

Weight Frozen

Weight Thawed

Conclusion:

MC	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

5 Grams of orange-drink mix is added to 100 grams of water. What would you expect the new solution to weigh?

a. 95 grams

b. 100 grams

c. 105 grams

d. 500 grams

Correct Answer: c

MC	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

5 grams of salt is dissolved in 100 ml of water to form a saltwater solution. If the solution is heated and the water boiled away, how much salt would you expect to have left in the container?

a. 2.5 grams

b. 5 grams

c. 105 grams

d. 500 grams

Correct Answer: b

MC	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Which of these will weigh the same after it has undergone a change?

a. Paper being burned to ashes.

b. Sugar water being evaporated.

c. Two chemicals reacting to form a gas.

d. Ammonia added to steel wool to create heat.

Correct Answer: b

I	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Lia was experimenting to find out if salt that was dissolved in water weighed the same before it was dissolved as it did after it was dissolved and evaporated. Look at her chart to answer the question.

Substance	Weight of cup and salt	Weight with water added to cup	Weight of cup and salt after evaporation
5 grams of salt in cup	29 grams	129 grams	29 grams

Lia found that

e. The salt weighed less than it did before being evaporated.

f. The salt weighed the same as it did before being evaporated.

g. The salt weighed more than it did before being evaporated.

h. It was impossible to tell the answer from the data provided.

Correct Answer: b

E	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Explain how you would find out if 20 grams of salt mixed with hot water would weigh the same after it has evaporated.

Correct Answer:

You would weigh the salt in a cup to see how much it weighs. Then add some hot water and stir. Let it set outside or in a warm area for one to two weeks until the water has completely evaporated. Weigh the salt and cup again to see if the weight is the same.

MC	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

To make Glurox, Kim mixes 25 ml of glue with 20 ml or water and 20 ml of Sodium Borate Solution. She stirs it quickly until it makes a ball. It seems smaller now. What do you predict it will weigh?

a. Less than the sum of the ingredients, because it is smaller than it was before.

b. The same as the sum of the ingredients, even though it has changed shape and size.

c. More than the sum of the ingredients, because it has become thicker than it was.

d. It changes from more to less weight each time it is made, so we canÕt determine how much it will weigh.

Correct Answer: b

E	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

If 5 g of vinegar is added to 100 grams of cream, how much do you think the new solution will weigh? Explain why.

Correct Answer:

The new solution will weigh 105 grams because matter is neither created nor destroyed, but can change.

P	5^th Grade	Standard: 01
Objective: 01. Describe that matter is neither created nor destroyed even though it may undergo change.
ILO:

Activity description:

Students will perform a chemical reaction and weigh the reactants and the products to show that weight doesnÕt change in a chemical reaction.

Materials needed:

2 liter pop bottle (clear plastic)

balance

water

Alka Seltzer tablets (or any effervescent stomach aid)

Balloon

Baking soda and vinegar could also be used.

Prior to assessment:

Students should understand that a chemical reaction involves the formation of a new substance, which may be a gas. They should also know that the weight of substances does not change in a chemical reaction. It would also be helpful for them to know that, within certain limits, their balances will not read the same object precisely the same each time it is weighed.

Time needed:

50 minutes

Procedure:

1. 100 ml of water should be added to the bottle.

2. The bottle (with water), the balloon, and the alka seltzer tablet should be weighed together on the balance.

3. The alka seltzer tablet should be placed in the balloon. It may have to be broken, if so all the pieces should be placed in the balloon.

4. Attach the balloon around the top of the bottle so it covers it and seals it tightly.

5. Raise the balloon and allow the alka seltzer to drop down into the bottle.

6. After the reaction is over, weigh again.

7. Students should record their data and answer the following questions:

a. Did the weight change? Why or why not?

b. What new substances were formed?

8. The balloon should be taken off and the gas allowed to escape. The bottle should be weighed again. Students should answer these questions:

c. Did the weight change? Why or why not?

Correct Answers:

7. a. No, the material did not escape and no new material was added.

b. A gas and a solution of water and alka seltzer.

8. c. yes, the gas escaped and it had weight.

Scoring Guide:

1. Student follows directions 3 points

2. Student records data 3 points

3. Student correctly answers questions 6 points