Classifying
Matter
Matter
This property tells us whether an object will sink or float in water.
What is relative density?
Trail mix with pretzels, peanuts, and raisins is an example of this, because you can still see all the parts.
What is a mixture?
When you pour soil into water, the soil and water together still have the same amount of this.
What is matter?
This state of matter has a definite shape and a definite volume.
What is a solid?
Mrs. Weaver builds a house out of blocks and uses a balance to measure the mass. The purple blocks are 4 grams, pink are 6 grams, and green is 3 grams. She then makes a toy building using TWO of each type of block. If she measures the mass of the building, what would it MOST LIKELY be?
26 grams because 4 + 4 + 6 + 6 + 3 + 3 = 26
If you hold an ice cube and it feels very cold, you are describing this physical property.
What is temperature?
When you stir sugar into tea and it completely disappears, the sugar and tea form this.
What is a solution?
When oil is poured into water, it floats on top. Even though they don’t mix, the total amount of matter is still the same. This shows the law of what?
What is conservation of matter?
Water takes the shape of its container but keeps the same volume. What state of matter is it?
What is a liquid?
Mr. Todd has two mixtures. Mixture A has sugar and water. Mixture B is oil and water. How are the two mixtures different from one another?
Mixture A is a solution because the sugar dissolves in the water and you can’t see the sugar anymore.
Mixture B is not a solution because the oil does not mix with the water, and you can still see both parts.
A paperclip sticks to a magnet because it has this property.
What is magnetism?
If you add sand to water, you can still see the sand. This means sand and water form this type of combination.
What is a mixture (not a solution)?
True or False: When you mix two substances together, the amount of matter changes.
False
This state of matter has no definite shape or volume and spreads out to fill a space.
What is gas?
Mr. Todd has two mixtures. Mixture A has sugar and water. Mixture B is oil and water. What can be done to separate the parts of each mixture?
Mixture A, the sugar and water make a solution, so you can separate them by letting the water evaporate, and the sugar will be left behind.
In Mixture B, the oil and water don’t mix, so you can separate them by letting the oil float to the top and then pouring it off.”
A balloon filled with air, a block of wood, and a glass of water all represent different forms of this property of matter: solid, liquid, or gas.
What is physical state?
When salt is stirred into water, it dissolves. To separate the salt from the water again, you would need to use this process.
What is evaporation?
If you have 100 grams of sand and 200 grams of water, how many grams will the mixture weigh altogether?
What is 300 grams?
When you leave an ice cube on the counter, it turns into water. What change of state is happening?
What is melting?
What is the use of a graduated cylinder?
to measure the volume of a liquid
Two blocks of wood are the same size, but one is heavier. The heavier block has more of this property, measured with a balance.
What is mass?
If you wanted to separate sand from water, or iron filings from sand, you could use special tools. Name one tool you could use.
What is a filter (for sand and water) or a magnet (for iron filings and sand)?
A student mixes soil and water in a jar. After a while, the soil settles at the bottom. Explain why the mixture still demonstrates conservation of matter.
Because the soil and water are still present, just in different places, and their total mass hasn’t changed.
When you boil water, bubbles form and steam rises. What change of state is happening, and what two states of matter are involved?
What is evaporation (liquid --> gas)?
Weaver and Todd wondered what would happen to different metals if they were put out in the rain. They chose two pieces of metal: one was shiny and one was dull and black. Each piece weighed 300 grams. Every three days, they would pour 30 grams of water over each piece of metal. After five weeks, they noticed that the black metal was covered in orange-colored powder. The shiny silver piece was not. They weighed both pieces of metal at the end of five weeks. After they scraped the orange powder off, the black piece of metal weighed only 240 grams. What happened to the piece of black metal, and why did it weigh less after the experiment? Drag and drop ONE correct answer onto each space. The black metal was iron. When iron is exposed to water, _____________ forms. The girls learned in class about conservation of _____________ . They knew that the extra weight had to be somewhere. Kelsey suggested that Mickey weigh the rust. It weighed _____________.
1. rust or mold
2. metal or mass
3. 60 grams or 540 grams
1. rust
2. mass
3.60 grams