Matter Pre-Test

What are the smallest parts that make up matter?

• Atoms
• Elements
• Molecules
• Compounds

Which of these is true about atoms and molecules?

• An atom has more elements than a molecule.
• A molecule is made up of two or more atoms.
• Molecules cannot be broken into different parts, and atoms can.
• Atoms make only compounds, and molecules make only elements.

Which of these is true for both mixtures and solutions?

• Their parts are evenly spread out.
• They combine a liquid and a solid.
• Their parts can be easily separated.
• They are made of two or more things.

Which statement about compounds is true?

• A compound is a type of mixture made of solids.
• A compound is made up of at least two different elements.
• An element has the same properties as the compound it forms.
• An atom has the same state of matter as the compound it forms.

Which of the following is an example of a physical change?

• A piece of cloth is cut into strips.
• A glass of milk turns sour.
• A piece of wood burns.
• A metal nail rusts.

Jenny put a jar with 100g of water in the freezer until all the water turned into ice. What is the mass of the ice?

• It is 100g
• It is less than 100g
• It is more than 100g
• It depends on how cold the freezer was

Which of these has physical properties?

• A thought
• A shout
• Music
• Steam

Which of these can happen without a change in temperature?

• Water evaporates
• Vapor condenses
• Glass melts
• Iron rusts

Which of these can occur when matter changes state?

• Its mass increases
• Some heat is absorbed
• Rust forms on its surface
• A new substance is formed

Which of these is most likely a sign that a substance has had a chemical change?

• Its volume changes
• Its shape changes
• Its color changes
• Its state changes