5 th Grade Matter Science Review

Test Your Mixture and Solution Knowledge? Mrs. Hansen is baking cookies. She combines sugar, flour, nuts, Eggs, butter, baking soda and Chocolate chips. Which term describes the unbaked cookies? a. Solution c. compound b. Mixture d. Pure substance

B. Mixture  Remember: if you can pull just one item out of the combination it is a mixture!

 Hunter added 3 drops of green food coloring to Mrs. Hansen’s fish tank filled with water. Is the water in the fish tank?  A. Diluted  B. Saturated  C. Concentrated  D. Contaminated

 B. Diluted  A dilute solution has little solute in comparison with how much could dissolve

 While making smoothies Mrs. Hansen put a powdered mix in the blender and then added milk. What is the milk called?  A. Solute  B. Concentrated  C. Solvent  D. Dilute

 C. Solvent  Individual particles of the solute spread throughout the solvent. Think about our fish tank filled with water. The water is the solvent and the salt is the solute.

 A 5 th grade class placed nuts, bolts and sand in a large box. They passed a huge magnet through the bowl. When they removed the magnet they found the nuts and bolts stuck to the magnet. Which of the following best describes the combination of sand, nuts and bolts?  A. Gas C. Mixture  B. Element D. Compound

 C. Mixture  As long as you can remove one or more items it is called a mixture

 Mrs. Hansen wanted to see what would happen if she could get a Coke to float in her fish tank. She added 3 containers of salt. She stirred the water in the fish tank so she could see no salt on the bottom of the fish tank. Which statement best described what has happened to the salt.  A. The salt has floated to the top of the glass.  B. The salt has changed phase from a solid to a gas.  C. The salt has combined with the water to make a solution  D. The salt has reacted with the water to make a compound

 C. Solution  Was the solution  Diluted  Concentrated or  Saturated

 Chylynn was making lemonade for the class. The directions had smeared on the side of the jar that held the powdered mix so Chylynn had to guess how much powder to use. She put in 8 cups of powder in 2 quarts of water. While stirring she noticed that there was undissolved powder in the bottom of the pitcher. What had happened?  A. The water was diluted.  B. The water was concentrated  C. She had turned the water into a compound  D. The water was saturated.

 D. The water was saturated. No more particles could be absorbed leaving powder at the bottom of the pitcher.

Check your States of Matter???  When water is heated to 100 degrees Celsius, it begins to boil. Some of the water begins to escape as steam. Which best describes what has happened to the water?  A. Its state has changed  B. Its mass has changed  C. Its density has increased  D. Its temperature has decreased.

A. Its state has changed  There are 4 states of matter  Solid  Liquid  Vapor or Gas  Plasma Hint: Water can change back to a solid and liquid through condensation and removing heat.

Alijah removed an ice cube from the freezer and placed it in a glass. After a few hours, the ice has completely melted to become water. What do the frozen water and the liquid water have in common? a. They are the same shape b. They have the same mass c. They are in the same state d. They occupy the same volume.

B.They have the same mass. Whether you have an ice cube in a solid, liquid or water vapor you still have the same mass.

 Kierstyn was at the bus stop one morning after a heavy rain. When she gets to the bust stop at 7:15 a.m., the sun is shining on puddles that have formed on the sidewalk. When she is dropped off at the bus stop at 2:30 p.m., the sun is still shining but the puddles are gone. What happened to the water?  A. It froze  B. It melted  C. It condensed  D. It evaporated

D. It evaporated  Water that disappears, evaporate  Water that appears for what is apparently no reason is water vapor that condensates. The object is colder than the air and water vapor sticks to the side of the cold object.  Precipitation is when condensed water has collected in the clouds, the clouds then become heavy and the water comes down in precipitation. (rain, snow, hail)

 Donavan left a glass filled with ice cubes out on the counter on hot day. What best describes the change of state of matter that will take place in the glass?  A. Liquid to gas to a solid  B. Liquid to solid to gas  C. Solid to gas to liquid  D. Solid to liquid to gas

D. Solid to liquid to gas  The ice cubes are a solid, they will melt turning them into a liquid and if the glass is left on the counter long enough the water will evaporate into water vapor.

What is the Change?????  Joe needed to put some more bedding in his bearded dragon’s cage so he tore up newspapers all afternoon until he had a large bucket of shredded newspaper. What type of reaction is Joe’s bucket of newspaper?  A. Nuclear  B. Physical  C. Chemical  D. Electrical

B. Physical Change  A physical change can be put back together. You still have the same substance.

 Patria would like to make a mini volcano like Mrs. Hansen but she wants it to smell better. She experiments with lemon juice and baking soda. She was successful and the volcano worked and had a lemon smell when it began to bubble. What type of reaction has occurred between the baking soda and lemon juice?  A. Nuclear B. Physical  C. Chemical D. Electrical

C. Chemical  A chemical change occurs when one substance or kind of matter changes into another completely different kind of matter with different properties.  Examples of Chemical changes are  Burning  Rust  A substance giving off CO 2 – when you mix an acidic juice and baking soda carbon dioxide is given off. During a chemical change atoms rearrange themselves to form a different kind of matter. Evidence of a chemical change may be a change in color or the formation of a gas or a solid.

 What is the best way to describe the difference between a physical change and a chemical change?  A. A chemical change releases heat; a physical change does not.  B. A chemical change creates bubbles; a physical change does not.  C. A chemical change makes a new substance; a physical change does not.  D. A chemical change can be observed with the naked eye; a physical change cannot.

C. A chemical change makes a new substance; a physical change does not.

Law of Conservation  Gabby is peeling an apple that weighs 387 grams. After she peels the apple she weighs the peels. They weigh 25 grams. How much does the peeled apple weigh?  A. 290 grams  B. 352 grams  C. 262 grams  D. 362 grams

D. 362 grams  Subtract the total grams of the apple less the peelings (375 – 25) = 362

What do you think????  Will a nail rust faster in warm salt water or cold salt water?  What are the variables in this experiment?  What would be the control Group?  How many nails would you need?  What supplies would you need?

 The variable is the temperature of the water.  Will a nail rust faster in warm salt water or cold salt water.  Control Group: Nail with no water  10 trials – 3 nails for each trial (warm salt water, cold salt water and the control group.) = 30 nails  Thermometer to measure water temperature, Calendar, 30 cups, and a hot plate to maintain the warm water.