Midterm Review

What is the science definition of Product?

• An ending substance that is made during a chemical reaction
• A starting substance that is part of a chemical reaction
• Something a company makes to make money
• An object, diagram, or computer program that helps us understand something by making it simpler or easier to see

The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)

• The properties will likely be different because the repeating groups of atoms that make up each sample are different.
• The properties will likely be different because there are more repeating groups of atoms in Sample 2.
• The properties will likely be the same because the repeating groups of atoms that make up the two samples have the same number of atoms.
• The properties will likely be the same because the repeating groups of atoms that make up the two samples have two of the same types of atoms.

Which of these is the correct order of labels?

• 1. Atom 2. Extended structure 3. Repeating atom group 4. Molecules
• 1. Atom 2. Repeating atom group 3. Extended structure 4. Molecules
• 1. Repeating atom group 2. Atom 3. Extended structure 4. Molecules
• 1. Molecules 2. Repeating atom group 3. Extended structure 4. Atom

The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)

• The properties will likely be different because the repeating groups of atoms that make up each sample are different.
• The properties will likely be different because there are more repeating groups of atoms in Sample 1.
• The properties will likely be the same because the repeating groups of atoms that make up the two samples have one of the same types of atoms.
• The properties will likely be the same because the repeating groups of atoms that make up the two samples have the same number of atoms.

During a chemical reaction, one or more starting 1._____________ change into one or more different 2._____________.

• 1.rearrange 2. chemical reactions
• 1. reactants 2. products
• 1. products 2. reactants
• 1. properties 2. models

The diagram above shows the repeating groups of atoms that make up two samples. Both samples are green gases at room temperature. Will the other properties of the two samples be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)

• The other properties will be the same because the repeating groups of atoms that make up the two samples are the same.
• The other properties will be different because there are more repeating groups of atoms in Sample 2.
• The other properties will be the same because both samples are green at room temperature.
• The other properties will be the same because both samples are gases at room temperature.

Oh no!!! The person across from you spills a container of an unknown substance on the table!! They see Mr. Dake did not notice and quickly clean it up. Its extremely obvious to you that they don't plan on telling Mr. Dake Which safety Guideline should you follow?

• 9
• 1
• 2
• 3
• 4

You mix two substances together the atoms move and rearrange what is this called?

• Model
• Substance
• Chemical reaction
• Property

The diagram above shows the repeating groups of atoms that make up two samples. Both samples are liquid at room temperature. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)

• The properties will likely be the same because the repeating groups of atoms that make up the two samples have the same types of atoms.
• The properties will likely be the same because both samples are liquids at room temperature.
• The properties will likely be different because the repeating groups of atoms that make up the two samples have different numbers of atoms.
• The graph shows too much fluctuation to be confident about a trend.

Carbon atoms change into other types of atoms like hydrogen and oxygen when they need to for a chemical reactions.

• True
• False