EOG Question Set #4 Matter and Energy

Elsa is making a grilled ham-and-cheese sandwich. She uses a 20-gram slice of cheese, 40 grams of sliced ham, and two 15-gram slices of bread. After she heats the sandwich on a griddle, the cheese is melted. What will be the mass of her sandwich?

• 75 grams

• 90 grams

• 55 grams

• 60 grams

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Which is an example of heat being transferred by conduction?

• an ice cube melting in a person’s hand

• a furnace heating the air in a school

• a pot of water on a stove boiling

• the sun heating water in a swimming pool

Mrs. Walker wants to prove to her students that when an object is burned, its total mass is the same before and after the reaction. What should Mrs. Walker do to make sure this is shown by the experiment?

• burn the object outside on a nice day

• add water to the object after it is burned

• burn the object in a closed container

• split the object into two equal pieces before burning

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The graphic below shows a greenhouse which is made of glass and used to grow plants in Raleigh, North Carolina during the winter.

Which best explains why the temperature inside the greenhouse is higher than the temperature outside the greenhouse?

• The cool air outside passes into the greenhouse by radiation, and then the cool air is conducted inside the greenhouse.

• The warm air outside passes into the greenhouse by convection, and then the warm air is conducted inside the greenhouse.

• The sun’s rays conduct heat into the greenhouse, and then the warmed air is radiated inside the greenhouse.

• The sun’s rays radiate heat into the greenhouse, and then the air inside the greenhouse is warmed by convection.

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Examine the diagram below. What would a teacher most likely use this image to explain?

• Air being added and taken away is causing physical changes in water.

• Heat being added and taken away is causing chemical changes in water.

• Heat being added and taken away is causing physical changes in water.

• Air being added and taken away is causing chemical changes in water.

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Which best explains why a refrigerator is usually not made completely out of metal?

• Metal will not transfer heat, which allows the refrigerator to remain cool.

• Metal easily transfers heat, which would warm the inside of the refrigerator.

• Metal would heat up quickly on the outside, making the door too hot to touch.

• Metal cools quickly, causing the refrigerator to be too cold and freeze the food inside.

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Which processes occur when a pot of water placed on a hot stove causes the water to boil?

• The pot heats because of conduction, and radiation causes movement of the water.

• The pot heats because of radiation, and convection causes movement of the water.

• The pot heats because of conduction, and convection causes movement of the water.

• The pot heats because of convection, and conduction causes movement of the water.

Which is the best example of a change that CAN be undone?

• chocolate left in a warm car to melt

• cake batter put in an oven to bake

• clay put in an oven to harden

When a warm plate is placed onto a cool counter, which most likely occurs?

• The plate gains heat and the countertop gains heat.

• The plate loses heat and the countertop gains heat.

• The plate gains heat and the countertop loses heat.

• The plate loses heat and the countertop loses heat.

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Why does ice cream placed in a plastic cooler melt slower than ice cream placed in a metal pot?

• because metal is a better insulator than plastic

• because plastic is a better insulator than metal

• because metal insulates against more heat

• because plastic conducts more heat

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