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SURVIVOR

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Describe that matter is neither created nor destroyed even though it may undergo

change.

A. 250 grams, because it is still the same amount of waterB. 375 grams, because when water, sugar, and flavoring are mixed the flavoring doesn’t weigh anythingC. 380 grams, because water, sugar, and flavoring weigh the same even when dissolvedD. 400 grams, because liquids get bigger when they are combined all together

A student mixed 125 grams of sugar, 250 grams of water, and 5 grams of flavoring. The solution weighs:

When 20 grams of baking soda is added to 100 grams of vinegar a gas is released and it bubbles into the air.

A. The solution has all bubbled awayB. The solution weighs less than 120 gramsC. The solution weighs exactly 120 gramsD. The solution weighs 140 grams

Which correctly explains the results of this demonstration?

100 ml of water was poured into a cup, then put into a baggie. It weighed 92 grams. When frozen, it was slightly larger but still weighed 92 grams. After melting it weighed 92 grams. What was her evidence the weight did not change?

A. When frozen, it became slightly largerB. When frozen, it changed from a liquid to a solidC. It weighed the same when a liquid as when a solidD. It filled the same size of container whether solid or liquid was

A student conducted the following experiment:

What does the solution weigh?

A. 100 gramsB. 110 gramsC. 115 gramsD. 120 grams

Fifteen grams of vinegar will be added to 100 grams of milk. It thickens slightly.

Which statement is correct?

A. A castle built with 125 cubes weighs 625 grams.B. A castle built with 125 cubes will weigh 800 gramsC. Using 125 cubes, a tall tower will weigh more than a wide towerD. It is impossible to know the weight because the castle would be too big for the scale

A student used 125 sugar cubes to build a castle. Each cube weighed 5 grams.

If the weight of all the blocks is added, what will it total?

A. A little less than the weight of the houseB. The same weight as the weight of the houseC. A little more than the weight of the houseD. It would depend on how large the house was

A house made of toy blocks is weighed. It is

taken apart and each block weighed separately.

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. Sarah's weighs more because it is roundB. Jake's weighs more because it is longC. There is no way of knowingD. The figures would be equal

Sarah and Jake were each given a ball of clay of the same weight.

What has happened to the weight of this flask and balloon in this experiment?

A. It has decreased as the water boiled awayB. It has stayed the same weightC. It is unpredictable because the balloon is flexibleD. It has increased as the balloon expands

Water is boiled in a flask with a balloon over the top. As the water heats, the balloon expands.

A day later he takes the ice cube out of the pan and notices it is larger than before. What will it weigh?

A. 10 gramsB. 11 gramsC. 20 gramsD. impossible to know

Stuart measures 10 grams of water into a pan and then freezes it.

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 gramsB. 5 gramsC. 105 gramsD. 500 grams

Five grams of salt is dissolved in 100 ml of water to form a saltwater 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 beforeB. The same as the sum of the ingredients, even though it has changed shape and sizeC. More than the sum of the ingredients, because it has become thicker than it wasD. It changes from more to less weight each time it is made, so we can't determine how much it will weigh

To make Blobbers, Kim mixes 25 ml of glue with 20 ml of water and 20 ml of Sodium Borate

Solution

A. shapeB. phase (solid, liquid, gas)C. hardnessD. flammability

Which of the following is NOT a physical property of matter?

A. It will pourB. It takes the shape of its containerC. It cannot be seen easilyD. It will hold its shape by itself

How do you know when something is a solid?

A. It reacts with oxygen in the airB. It changes to liquid waterC. It is hard and whiteD. It is cold to the touch

What evidence shows that ice had a physical

change when left out in a room?

Each was tested to see if it floated in water, burned when lit with a flame, or melted when heated. Which substance had a physical change?

A. AB. BC. CD. D

The following data were collected by testing four substances.

Each was tested to see if it floated in water, burned when lit with a flame, or melted when heated. Which of the tests is not reversible?

A. floating in waterB. burning when litC. melting when heated

The following data were collected by testing four substances.

When she went back the next day, the soda was all over the freezer and the can was ripped open. Martha wondered if all substances would do the same thing as the soda. How could she design an experiment to find out?A. Pour the same amount of 4 different liquids into ice cube trays. Wait one day and measure sizes.B. Put 1 can of soda in the freezer and 1 can in the refrigerator. Wait two days.C. Put four cans of soda in the freezer and leave overnight.D. Open 1 can of soda and don't open the other. Place both in the freezer and wait a day.

Martha wished to cool off a can of soda pop quickly. She put it in the freezer but then forgot

it.

A. It has been mixed with food coloring and rubbing alcohol to change colorB. It has been burned and is now a pile of ashesC. It has been rolled into paper logs and burned for firewoodD. It has been cut into smaller pieces to make note cards

Which of these describes paper after it has been through a physical change?

When she went back the next day, the soda was all over the freezer and the can was ripped open. Martha decided that a physical change had occurred when the pop expanded. What evidence supports her?A. The can was stuck to the freezerB. No new substance had formedC. The soda was her last canD. Chemical changes must have two substances

Martha wished to cool off a can of soda pop

quickly. She put it in the freezer but then forgot it.

Investigate evidence for changes in matter that occur during a chemical reaction.

A. Burning creates food for peopleB. Modern medicines depend on burningC. Most clean water is created by burningD. Burning fuels supplies light and heat

How might reactions with burning be important

in your daily life?

How do you know a chemical reaction has taken place?

A. A solid and a liquid have been mixed togetherB. A new substance has formedC. The balloon has stretched and changed shapeD. The bottle has not been changed

Baking soda and vinegar are mixed in a bottle. A balloon placed over the top fills & expands with

gas.

What was needed for this chemical change to take place?

A. heat energy had to be addedB. heat energy had to be taken awayC. a certain amount of time had to passD. the bread had to be taken out of the wrapper

Bread placed in a toaster turns brown then black if left too long.

What evidence shows that a chemical reaction has taken place?

A. They are hard to useB. The sun has warmed themC. They are dirtyD. They have a new brown/orange crust on them

A pair of scissors left outdoors has rusted.

A. They are made of chemicals.B. They change color and give off energyC. It is easy to reverse the explosionD. They are only used for special occasions

How are fireworks examples of chemical reactions?

Which of Mark's observations would show that a burning candle is a chemical reaction?

A. black smoke is given off, how gases are risingB. the wax starts to meltC. the candle is white and made of wax and a wickD. time passes one minute at a time

Mark made observations as he watched a white candle burn. Use his data to answer the

question.

Which of Mark's observations would show that a burning candle has physical changes?

A. black smoke is given off, hot gases are risingB. the wax starts to meltC. the flame glows red and orangeD. time passes one minute at a time

Mark made observations as he watched a white candle burn. Use his data to answer the

question.

When it is over, the solution weighs 24 grams. Why has the weight changed?

A. A gas has formed and left the mixtureB. The vinegar has evaporatedC. The new solution is lighterD. Baking soda is lighter when dissolved in vinegar

Five grams of baking soda and 20 grams of vinegar are added together. A bubbling reaction

starts.

A. carrots cut up in a saladB. vinegar and oil mixed togetherC. juice and water stirred togetherD. sugar and cream boiled to make a thick sauce

Which of these foods have been through a chemical change?

A. Yes, a gas has been given offB. Yes, the color has changedC. No, water does not react chemicallyD. No, no new substances have formed

A student watches an ice cube melt into a puddle of water. Has a chemical reaction taken place?

If she used baking soda instead of milk, which of the following would happen between baking soda and vinegar?

A. It would also become slightly thickenedB. It would not mix well togetherC. It would bubble and form a gasD. It would harden to become a solid

While cooking, Amber combined vinegar and milk, which slightly thickened.

A. Chemical reactions between two substances are easily reversibleB. Anytime a solid and liquid are combined, they always form a solidC. Changing one of the materials in a chemical reaction will usually change the resultsD. Anytime vinegar is used in chemistry, a gas is always released

Which of the following is true about chemical reactions?

What would be proof of this?

A. The gasoline sometimes evaporates.B. A gas called exhaust is produced.C. The car moves using its own power.D. Gasoline is a liquid.

A student was told that a car using gasoline was an example of a chemical change.

A. Two liquids are combined to make a fruit juice drink.B. Liquids and solids are combined to make chocolate chip cookies.C. Popcorn kernels are heated to make a bowl of popcorn.D. Two metals react in a mild acid to make electricity in batteries.

Which is the best example of a chemical reaction that will help people?

Great Job Everyone

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