Chemical Reactions Quiz

Which word means something that can be observed about a substance, such as color, smell, or boiling point?

• model

• property

• scale

• molecule

Which statement is true about the diagram above?

• The samples all have the same properties.

• The samples all have different properties.

• Sample 1 and 3 have the same properties.

• Sample 2 and 3 have the same properties.

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

• The other 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 other properties will likely be the same because both samples are gases at room temperature.

• The other properties will likely be different because there are more repeating groups of atoms in Sample 1.

• The other properties will likely be different because the repeating groups of atoms that make up the two samples have different numbers of atoms.

Will the properties of the two samples likely be the same or different?

• Different because the repeating groups of atoms that make up each sample are different.

• Different because there are more repeating groups of atoms in Sample 2.

• The same because the repeating groups of atoms that make up the two samples have the same number of atoms.

• The same because the repeating groups of atoms that make up the two samples have two of the same types of atoms.

Which of the following is the best observation?

• pretty color solid

• dark color, looks interesting

• white, small, clear, crystals

• small, round, weird

Who had a better description of the sample?

• David

• Luisa

The image in the box represents what?

• atom

• molecule

• repeating group of atoms

Things that are too small (or too large) to see can be studied with ____________.

• scales

• models

• properties

• molecules

The diagram above shows the repeating groups of atoms that make up two samples. Both samples are red powdery solids 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 different because there are more repeating groups of atoms in Sample 1.

• The other properties will be the same because both samples are red at room temperature.

• The other properties will be the same because both samples are powdery solids at room temperature.

• The other properties will be same because the repeating groups of atoms that make up the two samples are the same.

Groups of atoms vary in the ______ or ______ of atoms that make up the group.

• type, number

• letter, number

• color, type

• number, shape