Chemical Rxns Final Assessment - Review Questions

All substances have the same properties

• True

• False

Answer explanation

Some substances can have similar properties. However, all substances have their own properties that are unique to them.

It's possible for two different substances to share one property.

• True

• False

Answer explanation

It's definiteily possible for two different substances to share one property. Think about salt and sugar – They are both white, powdery solids... however, they are completely different substances.

Vocabulary definition: the tiny pieces that all matter - all the stuff in the world - is made of

• Atoms

• Molecule

• Solutions

• Mixtures

Vocabulary definition: a process in which atoms rearrange to form new substances

• Mixture

• Magic

• Chemical Reactions

• Boiling Point

Vocabulary definition: an object, diagram, or computer program (sim) that helps us understand something by making it simpler or easier to see

• Molecule

• Chemical Formula

• Melting Point

• Model

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?

• Same

• Different

Answer explanation

Focus on the molecules that are in the boxes – The properties will likely be different because the repeating groups of atoms that make up each sample are different.

Vocabulary definition: an ending substance that is made during a chemical reaction

• Property

• Reactant

• Product

• Scale

Vocabulary definition: something that can be observed about a substance, such as color, smell, or boiling point

• Property

• Product

• Reactant

• Scale

Vocabulary definition: a starting substance that is part of a chemical reaction

• Product

• Scale

• Reactant

• Property

Look at your starting substances (Reactants), which of the following will likely be the ending substances after a chemical reaction has occurred?

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