STAAR Science Review

Front

Which of the particles in the chart is a neutron? Options: Particle A, Particle B, Particle C, Particle A and B

Back

Particle B

Front

Which statement is correct about protons and valence electrons?

Back

The number of protons determines the identity of an element, while the number of valence electrons determines its reactivity.

Front

Which list of characteristics best describe the properties of neon, argon, and krypton?

Back

Gaseous at room temperature and chemically stable

Front

Bead colors for (NH₄)₃PO₄ model: blue for nitrogen, red for hydrogen, orange for phosphorus, green for oxygen. How many of each color?

Back

3 blue, 12 red, 1 orange, and 4 green

Front

In which beakers did a chemical reaction most likely occur?

Back

1, 3, and 4

Front

What is the net force acting on this balloon?

Back

4N to the right

Front

The data chart indicates how carts of different mass accelerate when a constant force is applied. Using the data, determine the amount of force used in Newtons.

Back

4N

Front

The Earth is tilted at an angle of 23.5º relative to its position to the Sun. The tilting of the Earth on its axis contributes to: The different phases of the moon we see, The changing of seasons, High and low ocean tides, An increase in the gravitational force from the Sun

Back

The changing of seasons

Front

What is the next moon phase after waxing gibbous?

Back

Full Moon

Front

The Hertzsprung Russell diagram is labeled with specific stars. Based on the diagram, which of the following is a true statement?

• Betelgeuse, Antares, and Aldebaran are white dwarfs.
• The Sun is hotter and brighter than Spica.
• Regulus, Sirius A, and Procyon are all on the main sequence
• Sirius B is a red giant.

Back

Regulus, Sirius A, and Procyon are all on the main sequence