Chemistry Quiz Review

Matter can be broken down into smaller particles as shown. What type of particle is illustrated?

• Atom

• Cell

• Compound

• Molecule

Which substance is an element?

• Al

• CO

• HF

• NO2

Which set of substances contains only compounds?

• HCl, Co, H₂O, N₂, O₂

• Cl, Al, Br, Ba, Mn

• NaCl, NO₂, CH₄, CO

• Mg, Ca, NO, Ga, Ge

Each ball shown in the diagram represents a type of atom. Balls of the same shade and size represent the same kind of atom. Which diagram shows a mixture

• 1

• 2

• 3

• 4

A key for elements is represented by colored circles. Which diagram would best represent water?

• P

• Q

• R

• S

Which is a way that a piece of paper can go through a chemical change?

• fold the paper in half

• soak the paper in water

• burn the paper with fire

• cut the paper with scissors

A student adds sugar to two test tubes. The student adds water to test tube 1 and sulfuric acid to test tube 2. The diagram shows the observations. Is test tube 1 a physical or chemical change?

• Physical

• Chemical

A student adds sugar to two test tubes. The student adds water to test tube 1 and sulfuric acid to test tube 2. The diagram shows the observations. Is test tube 2 a physical or chemical change?

• Physical

• Chemical

Which image is the best example of a chemical change?

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Jake made a chart showing changes that occurred while he prepared his breakfast. Which numbers would best describe chemical changes?

• 2, 3, and 6

• 2 and 6

• 1, 2, and 3

• 2 and 3