Mixtures & Solutions
True or False. Kool-aid and water is a solution
True.
White, Grainy, Small particles, taste sweet.
Those Physical Properties are describing what substance?
Sugar
To measure temperature we use what kind of tool?
Thermometer
Sugar and water is a mixture or solution? How do you know?
Solution, Cannot be easily separated
Running in the science lab/classroom is safe.
NEVER!
True or False. Sand and Gravel mixed together is a mixture.
True.
2 substances are combined together and the physical properties change is it considered a mixture or a solution?
Solution
To measure Mass we use what kind of tool?
Triple Beam Balance
Tim went to the beach and brought back a bag of sand. Inside the bag was sand, rocks, and shells. Would this be considered a mixture or a solution?
Mixture
False.
Students went to the ocean and got some ocean water and sand and put it in a cup. What happened to the sand? Is this an example of a mixture or solution? Why?
Sand sank to the bottom of the cup, mixture, the two substances can be easily separated.
What is the best way to describe the physical properties of a substance?
Use your 5 (sometimes only 4) senses.
To measure volume we use what kind of tools?
Beaker or Graduated Cylinder
True or False. Pasta and water is a solution.
False
When disposing of ingredients in a science lab throwing them in the trash is what you should ALWAYS do? Explain.
No. Because some can be harmful and you don't want them in the classroom trash can in case someone gets it on their body.
A student spilled the contents of his pencil bag containing pencils, expo markers, steel paper clips, and erasers. What would be the BEST way to separate the paper clips from the rest of the contents?
use a magnet
Some students found a cork on the ground and wanted to know if it would sink or float when you place it in a bucket of water. What do you think?
Float
What unit do we use to measure mass? volume? temperature?
Grams, Milliliters, degree celsius
True or False. When you mix two substances together and one of the substances can no longer be seen that means it has disappeared.
False. It means it has dissolved.
When working with groups of people should everyone help clean up? If so should everyone leave the classroom to do one job? Explain.
Yes everyone should help. No only one person should be leaving the classroom from each group at a time.
A group of students is experimenting with mixtures and solutions. They fill a bottle with lemon slices, sugar, and kool-aid packet. They add water almost filling the bottle to the top and then shake the bottle to mix all of the ingredients. What physical properties of the water has changed after mixing the ingredients?
Taste and Color
When a student placed an ice cube in a glass of water, the ice cube floated. Why?
It is less dense than the water
A rain gauge is an example of finding what physical property after a nice rain shower?
Volume
Kirby was outside mowing the lawn. He asked if I could get him a glass of iced water. I did and set it on the table outside. When he got to the glass all the ice had melted and it was not just a glass of water. Is this considered a solution, mixture, both, or neither? WHY?
Neither. Ice is water. So now he just has one big glass of water.