Properties of Matter (Part 2)

1. You have a box that contains rubber cap erasers, steel screws and bolts, and corks that are made of tree bark. You need to separate the screws and bolts from the cap erasers and corks. You cannot use your hands to sort the materials. Which tool would be best to use to separate these materials? SC.5.P.8.3

• filter
• magnet
• screwdriver
• strainer

2. A beaker has a mixture of sawdust and sand. Which one of these procedures will help separate the sawdust from the sand in the mixture? SC.5.P.8.3

• placing a magnet in the beaker
• adding water to the beaker
• heating the beaker on a hot plate
• pouring the contents of the beaker through a screen

3. Juan stirs 20 grams of sugar and 20 grams of sand into 100 milliliters of water in a beaker, then allows the mixture to sit for five minutes. What is Juan most likely to observe after these five minutes? SC.5.P.8.3

• The sugar and the sand have settled into layers.
• Both the sand and the sugar are no longer visible.
• The sugar, but not the sand, has dissolved in the water.
• The sand has settled to the bottom, but the sugar is floating to the top.

4. The Voytko family decides to make hot cocoa after dinner. They add instant cocoa mix to hot water. What can they do to make the cocoa mix dissolve faster? SC.5.P.8.2

• Stir the hot cocoa.
• Halve the amount of water.
• Double the amount of cocoa mix added.
• Add the cocoa mix after the water cools.

5. Mai is making lemonade for her friends. After squeezing some lemons into water, she adds a few sugar cubes. After several minutes, the sugar cubes still have not dissolved. Which action will NOT make the sugar dissolve faster? SC.5.P.8.2

• Stirring the lemonade
• Warming the lemonade
• Adding more sugar cubes
• Breaking up the sugar cubes

6. Carter is cooking with his father. The recipe tells them to add butter, oil, salt, and noodles to a pot of boiling water and stir until dissolved. Which of the four ingredients is the only one that will dissolve? SC.5.P.8.2

• butter
• noodles
• oil
• salt

7. The ripening of an apple is an example of a chemical change. In order to investigate this process, Jennifer places one at room temperature and one in the refrigerator. After ten days Jennifer checks the ripeness of each apple. Which statement best explains the expected results? SC.5.P.9.1

• The apple at room temperature will ripen more slowly because higher temperatures increase the rate of chemical reactions.
• The apple at room temperature will ripen more slowly because higher temperature decrease the rate of chemical reactions.
• The apple at room temperature will ripen more quickly because higher temperatures increase the rate of chemical reactions.
• The apple at room temperature will ripen more quickly because higher temperatures decrease the rate of chemical reactions.

8. Which of these describes a physical change caused by a change in temperature? SC.5.P.9.1

• ice melting in a glass
• wood burning in a fire
• metal rusting in the rain
• leaves decaying in the sun

9. Which of these is a physical change that occurs because of a decrease in temperature? SC.5.P.9.1

• boiling
• condensation
• evaporation
• melting

10. Which phrase is an example of a change in temperature causing a chemical change? SC.5.P.9.1

• fireworks giving off different colors of light
• making warm water by pouring hot water into cold water
• a scientist using a machine to form copper balls from heated copper
• a person cutting off the bottom of a candle to make it fit in a holder