2016 Science STAAR Review

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Where is most of the mass in an atom located?

• in the nucleus
• in the protons
• in the neutrons
• in the electrons

The negatively charged particles of an atom are the ______.

• electrons
• protons
• neutrons
• protons & neutrons

Oxygen’s atomic number is 8. This means that an oxygen atom must have

• 8 electrons
• 8 protons
• 8 neutrons
• a mass number of 8

Elements on the right side of the of the zigzag line are normally?

• non metals
• metals
• metalloids
• rare earth metals

Which is an example of chemical  change

• Breaking Glass
•  Tearing clothes
• Baking Cookies

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Is C₂H₁₂O₃ an organic or Inorganic Compound?

• Inorganic
• Organic

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move up. 

What is the speed this motion?

• constant speed
• not moving
• speed increasing
• speed increasing at a constant rate