Science High School STAAR Review

How many aluminum atoms are in Al₂(SO₄)₃?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many atoms are in the neurotransmitter serotonin? The formula for serotonin is C₁₀H₁₂N₂O

• 10

• 20

• 25

• 23

Tags

NGSS.MS-PS1-1

Is the following equation balanced?
2C₂H₂ + 5O₂ --> 4CO₂ + 2H₂O

• yes

• no

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

• cold

• stationary

• warm

• occluded

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

• cold

• stationary

• occluded

• warm

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Most stars are made of which elements?

• Hydrogen only

• Hydrogen and Lithium

• Hydrogen and Sodium

• Hydrogen and Helium

Tags

NGSS.HS-ESS1-3

The atomic number of krypton is 36. If the mass number of a krypton atom is 84, which table shows the number of subatomic particles inside and outside the nucleus of the krypton atom?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

• Particle W

• Particle X

• Particle Y

• Particle Z

Tags

NGSS.MS-PS1-1

Which statement best describes evidence that a chemical reaction occurs as a cake bakes?

• the water in the cake batter evaporates

• the cake rises as gas bubbles form in the baking cake

• the cake takes the shape of the container in which it is baked

• the water in the cake batter is used to keep the cake moist as it bakes

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A large rock is motionless on a flat sidewalk. Which statement best explains why the rock remains motionless?

• there are no forces acting on the rock

• the only force acting on the rock is directed toward the sidewalk

• the forces acting on the rock are all balanced

• the sidewalk exerts an unbalanced force on the rock