Rock Candy Science

Which sentence is an opinion?

• The sugar solution is extrememly hot and can serious burns.

• A sugarcoated string can provide an initial target for making crystals.

• This may sound very scientific, but learning can be fun when science is sweet.

• Too much food coloring will turn the solution dark, making it difficult to observe crystal growth.

How is the first part of the passage organized?

• By listing steps in a process

• By presenting a problem and a solution

• By listing points in order of importance

• By describing a cause with a given effect

According to Figure 1, which material should NOT be used to make rock candy?

• glass jar

• nylon strings

• paper towel

• wooden spoon

What can you tell about the paperclip by looking at Figure 2?

• the weight of the paperclip

• how long the paperclip should hang in the jar

• how far the paperclip will swing if you move the jar

• What will happen if the paperclip touches the side of the jar

Which statement is true, according to Figure 2?

• The paperclip should float in the liquid.

• The paperclip should rest outside of the jar.

• The pencil should not be attached to the string.

• The pencil should be longer than the jar is wide.

What is the meaning of undisturbed in Step 9?

• bothered

• removed

• still

• uncovered

The step shown in Figure 3 is important because it ---

• helps keep out dust

• initiates crystal growth

• prevents tampering by others

• keeps crystals growth a surprise

The word evaporation in Step 10 most likely comes from a Latin root meaning -

• clear ice

• dissolver

• steam

• sugar

What is Figure 4 supposed to represent in this passage?

• finished rock candy

• a liquid sugar solution

• sugar crystals that are growing

• crusted sugar from the top of the jar

What is the passage mostly about?

• eating sweets

• collecting crystals

• trying an experiment

• acquiring a new talent