Physical Properties
What physical property tells whether an object is attracted to a magnet?
Magnetism
What do we call two or more substances that are physically combined and can be separated easily?
mixture
What tool could you use to separate iron filings from sand?
magnet
What are the three common states of matter?
solid, liquid. gas
What word means that a substance is able to dissolve in another substance?
solubility
A plastic bead floats in water. What does this tell you about its relative density compared with water?
It is less dense than water.
Sand is mixed with water. You can still see the sand at the bottom of the cup. Did the sand maintain its physical properties?
yes
What physical property allows you to use a magnet to separate iron filings from sand?
magnetism
Which state of matter has a definite shape and definite volume?
solid
Which is more soluble in water: salt or sand?
salt
Sand is stirred into water. After sitting for several minutes, you can still see the sand. Did the sand maintain its physical properties?
Yes
Iron filings are mixed with sand. The iron filings are still attracted to a magnet. Did the iron maintain its magnetic property?
yes
You have a mixture of sand and water. Name one tool you could use to separate them.
filter, strainer, sieve
Which state of matter has particles that are spread far apart and fills the entire container?
gas
Drink powder is stirred into water and spreads evenly throughout the water. What happened to the drink powder? What did it form?
It dissolved and formed a solution.
A student wants to know how much space a rock takes up. What physical property should the student measure?
Volume
Which mixture would be easiest to separate using a strainer: salt and water OR sand and water?
sand and water
You have a mixture containing iron filings, sand, and water. Describe how you could separate all three substances.
First use a magnet to remove the iron filings. Then use a filter or strainer to separate the sand from the water.
An empty balloon has a mass of 5 grams. After it is filled with air, it has a mass of 8 grams. Why did the mass increase?
Air is matter. Air is made of particles that have mass.
Salt is stirred into water until you can no longer see individual grains. Was the salt destroyed?
No. The salt dissolved and is still present in the solution.
A student observes a material that is magnetic, silver, and solid. Name three physical properties the student observed.
Magnetism, color, and physical state/state of matter.
A student mixes gravel and water. Explain why this mixture can be separated easily.
The gravel maintains its physical properties and does not dissolve in the water, so it can be removed with a strainer, filter, or similar method.
Salt has completely dissolved in water. What could you do to recover the salt?
boil the water
A student mixes 5 grams of salt with 150 grams of water. The student then evaporates all of the water. How many grams of salt should remain?
5 grams
Mia mixes 10 grams of sugar with 100 grams of water. After the sugar completely dissolves, what should the total mass of the solution be?
110 grams, because the sugar is still matter even though it dissolved.