Changes in Water

Name:

1) After the rain, puddles were formed on the sidewalk. Several hours later, the puddles of water disappeared. Which of the following processes did the water in the puddles go through?

• Boiling
• Freezing
• Evaporation
• Condensation

2). Joe tested how much time it takes for the water of different temperatures to freeze. He wrote down the results. Why should Joe record the results?

• To get a good grade
• To show his parents
• So that he can check the right answers
• So that he has a record of his data

3). Gino puts a pot of water on the stove so that he can cook some pasta. What type of change is taking place as the water is heated?

• Liquid freezing to become a solid
• Solid freezing to become a gas
• Liquid boiling to become a gas
• Solid melting to become a liquid

4). David builds a snowman, but as the sun comes out, he notices the snowman begins to get smaller and smaller. What type of change is taking place?

• Liquid freezing to become a solid
• Solid melting to become a liquid
• Liquid melting to become a gas
• Solid freezing to become a liquid

5). The pictures below show different forms of matter undergoing changes. Which of the pictures below demonstrates an example of matter melting?

• Picture 1
• Picture 2
• Picture 3
• Picture 4

6). Allen's mom brought him a cold water bottle outside. After a few minutes, drops began to form on the outside of the water bottle. Which process does the water on the outside of the bottle demonstrate?

• Boiling
• Condensation
• Evaporation
• Freezing

7). Polly did an investigation in which she cooled two equal-sized cups of water to 0°C/32°F. One cup had plain water and the other cup had salt water. She wrote down what she saw in the table below. After looking at the results, which conclusion can Polly make?

• Plain water boils at 0°C/32°F
• Plain water freezes at 0°C/32°F
• Saltwater freezes at 0°C/32°F
• Saltwater boils at 0°C/32°F

8). Henry investigated the boiling point of water when different amounts of salt were added. Which evidence that Henry collected is an observation and NOT a measurement?

• Amount of salt added
• Amount of water used
• Seeing the bubbles in the water
• The temperature at which the water boiled

9). Making a prediction is a part of completing a scientific investigation. Which provides the BEST explanation for making a prediction during a scientific investigation?

• Telling the future
• Making an educated guess as to what will happen
• Being a good team player
• Making a random guess as to what will happen