🧪 Properties of Matter
What state of matter has a definite shape and definite volume?
Solid
Trail mix contains cereal, raisins, and pretzels. What type of combination is trail mix?
Mixture
Sugar completely dissolves and spreads evenly throughout water. What type of mixture has formed?
Solution
Which tool should be used to remove iron filings from a mixture of iron and sand?
Magnet
Maya combines cereal, marshmallows, and pretzels. Each material keeps its own properties and can be separated. Name the science term that describes what she created.
Mixture
Marcus needs to determine how much space a small rock takes up. The rock cannot be measured easily with a ruler. Describe the method he should use.
Water displacement
Juice is poured from a bottle into a bowl. What property of the juice changes when it enters the bowl?
Shape
Sand and pebbles are mixed together. Which observable property would be most useful for separating them?
Particle size
In a mixture of salt and water, identify the substance that is being dissolved.
Salt
Which tool would best separate large rocks from fine sand?
Sieve/strainer
Kool-Aid powder is stirred into water until it spreads evenly and can no longer be seen. Name the science term for the mixture that formed.
Solution
Ava accidentally mixes paper clips with small plastic beads that are the same size. What property should she use to separate them?
Magnetic attraction
A rock is placed into 40 mL of water. The water level rises to 55 mL. What is the volume of the rock?
Hint: Use Water Displacement Method
15 mL
A mixture contains iron filings and sand. Which property should be used to separate the materials?
Magnetic attraction
In lemonade, sugar dissolves in water. Identify the substance doing the dissolving.
Bonus: What is the proper term used?
Water, Bonus: Solvent
A student pours sand and water through a material that allows the water through but traps the sand. What tool is the student using?
Filter/filter paper
Salt is added to water and disappears as it dissolves. Name the vocabulary term for the salt in this situation.
Solute
A student wants sugar to dissolve faster in water. She cannot heat the water. Describe one change she could make to make the sugar dissolve faster.
Stir the water OR crush the sugar into smaller pieces.
A student wants to compare two objects. What tool should the student use to measure the mass of each object?
Balance/scale
A mixture contains red beads, blue beads, and yellow beads that are all the same size. Which observable property would be most useful for separating them?
Color
Two students dissolve equal amounts of sugar. One uses warm water and the other uses cold water. Which student's sugar should dissolve faster, and what caused the difference?
The student using warm water; higher temperature increases the rate of dissolving.
Salt has completely dissolved in water. Which process could be used to separate the salt from the water?
Evaporation/Boiling it/Add heat
During the same experiment, the water causes the salt to dissolve. Name the vocabulary term for the water.
Solvent
A mixture contains large rocks, sand, and iron filings. Describe the tools you would use to separate all three materials and what each tool would remove.
A magnet removes the iron filings; a sieve separates the large rocks from the sand.
An unknown substance has no definite shape and no definite volume. Its particles spread out to fill its container. Identify its state of matter and explain the evidence.
Gas; gases have no definite shape or volume and spread to fill their container.
A mixture contains iron filings, large pebbles, and sand. Describe the properties you would use to separate all three materials.
Magnetic attraction removes the iron; particle or rock size to separates the pebbles from the sand.
A student wants a sugar cube to dissolve faster without changing the temperature of the water. Describe two changes the student could make.
Crush the sugar cube and stir the mixture.
A cup contains iron filings, pebbles, and sand. Identify two tools needed to completely separate the mixture and explain what each tool removes.
Magnet removes iron filings; sieve separates pebbles from sand.
During an investigation, Jordan notices that some materials are attracted to a magnet while others are not. Name the vocabulary term for the property Jordan is observing.
Magnetic attraction
Carlos has two mystery cups. Cup A contains sand and water. Cup B contains salt completely dissolved in water. He is given a sieve and a hot plate. Explain which tool/process he should use for each cup and why.
Use the sieve for Cup A because the sand remains separate from the water. Use heat/evaporation for Cup B because the salt has dissolved in the water.