Mid-Term Review - Quizizz #2

What elements are in this substance?: SnCO₃

• Tin, carbon, oxygen

• Selenium, carbon, oxygen

• Sodium, chlroine, oxygen

• Tin, chlorine, oxygen

Tags

NGSS.MS-PS1-1

The freezing point of nitrous oxide is –91°C. Which of the following statements best describes the effect on the particles in liquid nitrous oxide as its temperature is lowered to –91°C?

• The particles begin to move with a greater force.

• The particles begin to move in a straight line.

• The speed of the particles decreases.

• The motion of the particles becomes more random.

Tags

NGSS.MS-PS1-4

All the things in an experiment that must be the same to make it fair are called...

• dependent variables

• independent variables

• controlled variables or controls

What is the smallest unit of a chemical compound that still has the properties of that compound?

• nucleus

• element

• molecule

• atom

If 2 oxygen molecules (2O2)have a mass of 12.4g,

Carbon dioxide (CO2) has a mass of 8.7g,

2 water molecules (2H2O) has a mass of 24.7g,

what is the mass of methane (CH4)?

• 21 g

• 45.8 g

• 3.6 g

• 24.7 g

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Newton’s third law of motion involves...

• one force acting on one object

• a force pair acting on two different objects

• a force pair acting on one object

• unbalanced forces acting on many objects

Tags

NGSS.MS-PS2-1

To hold and store liquids, you would use a...

• graduated cylinder

• beaker

• flask

• pipette