Matter and Its Interactions Unit Test

Front

The atomic arrangements of two substances (A and B) are shown in the diagram. Which statement describes one of the substances correctly?

Back

Substance A is an element as atoms are not combined chemically.

Front

Classify the figures as compound, element, or mixture.

Back

Figure 1: element; Figure 2: compound; Figure 3: mixture

Front

The diagram shows the atomic arrangement of two substances formed by hydrogen (H) and oxygen (O) atoms. Which option correctly identifies the substances?

Back

substance 1: mixture; substance 2: compound

Front

A teacher asks her students to classify the substances listed in the table shown as elements, compounds, or mixtures. A student claims that all of the substances are compounds. Which statement correctly describes the student’s claim?

Back

The student’s claim is correct because the atoms in the substances are chemically combined to form a compound.

Front

What type of property of water is observed when small bubbles appear at the bottom of a pot of water on the stove?

Back

A physical property because the water is changing to steam.

Front

Which is a chemical property? Options: boiling, burning, freezing, melting

Back

burning

Front

A student mixes two substances and observes a rise in temperature and small, white particles that fall to the bottom of the test tube. What conclusion can be drawn?

Back

A chemical reaction occurred because a new substance was formed.

Front

Does boiling an egg result in a chemical reaction?

Back

Yes, because the egg yolk has different physical properties after the egg is boiled.

Front

What changes occur to water when heat energy is added to it in a pot on a stove?

Back

Particles move faster, and temperature increases.

Front

Is the student's conclusion valid based on the experiment with Mylar balloons in different temperatures?

Back

Yes. The data shows that as the temperature increased, the volume of the balloon increased.