Chemistry Concept Inventory

Two people decide to share a sugar-sweetened soft drink. The soft drink is divided equally into two glasses. Person B adds an equal amount of water to his glass.

Which glass contains the sweeter-tasting drink?

• Glass A

• Glass B

• Glass A & Glass B contain drinks that are equally sweet.

• Can't tell from the information given.

Two people decide to share a sugar-sweetened soft drink. The soft drink is divided equally into two glasses. Person B adds an equal amount of water to his glass.

Which glass contains more sugar?

• Glass A

• Glass B

• Both glasses contain equal amounts of sugar.

• Can't tell from the information given.

Two people decide to share a sugar-sweetened soft drink. The soft drink is divided equally into two glasses. Person B adds an equal amount of water to his glass.

Which glass will provide more energy from the drink in it?

• Glass A

• Glass B

• Both Glass A & Glass B will provide the same amount of energy.

• Can't tell from the information given.

A strong perfume is sprayed in the center of a sealed room.

Which of the following diagrams represents the distribution of perfume particles the instant the perfume is sprayed?

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A strong perfume is sprayed in the center of a sealed room.

Which of the following diagrams represent the distribution of perfume particles after several hours after the perfume had been sprayed?

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The evening before a birthday party, several balloons are filled with helium gas. The birthday party occurs on a hot summer day.

The next day some of the balloons burst! They burst because

• the helium particles got bigger.

• the space between the helium particles increased.

• A and B are the correct reasons.

• B and C are the correct reasons.

The evening before a birthday party, several balloons are filled with helium gas. The birthday party occurs on a hot summer day.

A guest at the party dives into the swimming pool holding an inflated balloon! When she gets to the bottom of the pool, the balloon

• becomes smaller.

• becomes bigger.

• does not change in size.

• does not submerge with the diver.

A candle is lit in a closed room. After an hour, which of the following statements is true?

• Part of the candle no longer exists.

• The candle melted and is found at the base of the candle.

• The candle was converted to energy.

• The material that “disappeared” is dispersed throughout the room.

A sugar cube is added to a hot cup of coffee. What happens to the sugar particles?

• They cease to exist.

• They spread out through the hot coffee.

• They melt in the hot coffee.

• They formed a new and different type of substance with the coffee.

A glass is half-filled with water at room temperature. Then some ice cubes are added to the water. Very soon, water droplets appear on the outside surface of the glass. Why does this happen?

• Water leaked out of the glass when ice cubes were added to it.

• The ice-water mixture cools the air, causing it to condense on the glass surface.

• Water in the air condenses on the cold surface of the glass.

• The ice-water mixture forms droplets on the surface of the glass.