IA #2 Review Day Two

The diagram shows a model of an atom. The model has four different symbols on it. Each

symbol represents a different role for one of the particles within the atom. In this model, which particle determines the reactivity of this atom?

• particle w

• particle x

• particle y

• particle z

Tags

NGSS.MS-PS1-1

A student drew atomic models of four elements. Based on these drawings, which element is the least reactive?

• Neon, because it has two energy levels with eight electrons in the second level

• Chlorine, because it has three energy levels with seven electrons in the third level

• Gallium, because it has four energy levels with three electrons in the fourth level

• Tin, because it has five energy levels with four electrons in the fifth level

Tags

NGSS.MS-PS1-1

Which statement accurately describes the atoms of a specific element?

• An indium‚ In‚ atom contains 115 protons inside the nucleus and 49 neutrons outside the nucleus.

• A scandium‚ Sc‚ atom contains 45 electrons outside the nucleus and 21 neutrons inside the nucleus.

• An aluminum‚ Al‚ atom contains 27 electrons and 27 protons inside the nucleus.

• A zinc‚ Zn‚ atom contains 30 protons inside the nucleus and 30 electrons outside the nucleus.

Tags

NGSS.MS-PS1-1

Which statement does NOT correctly compare silicon with another element?

• Silicon is a better conductor of electricity than sulfur.

• Silicon conducts electricity as well as copper does.

• Silicon is a solid at room temperature, but argon is a gas.

• Silicon is less malleable than silver.

A mother and daughter press their hands together and then push apart while ice skating. Immediately after they push away from each other, how does the motion of the mother and

daughter change?

• The mother moves forward, and the daughter moves backward with a greater

  acceleration.

• Both move forward, but the mother moves with a greater acceleration.

• The mother moves backward, and the daughter moves forward with a greater

  acceleration.

• Both move backward, but the daughter moves with a greater acceleration.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The diagram of Situation 1 shows one person failing to move a refrigerator up a ramp, while the diagram of Situation 2 shows two people successfully pushing a refrigerator up a ramp. What comparison can be made about the work done in the two situations?

• In Situation 1, no work was done, while 12,000 J of work was done in Situation 2.

• In Situation 1, 1,600 J of work was done, while 3,000 J of work was done in Situation 2.

• In Situation 1, no work was done, while 8,000 J of work was done in Situation 2.

• In Situation 1, 400 J of work was done, while 1,300 J of work was done in Situation 2.

Answer explanation

Tags

NGSS.MS-PS2-2

The net force on a vehicle that is accelerating at a rate of 1.5m/s2

is 1,800 newtons. What is

the mass of the vehicle to the nearest kilogram?

• 1200kg

• .00083kg

• 2700kg

• 1801.5kg

Tags

NGSS.MS-PS2-2

A pitcher throws a ball toward a player holding a softball bat. The player uses the bat to hit

the ball. The bat applies a 10-newton force to the ball. Which statement correctly describes the reaction force between the bat and ball?

• The reaction force is the force that causes the ball to move toward the bat.

• The reaction force is the force applied to the bat by the player holding the bat.

• The reaction force is the force that pulls the ball toward the ground.

• The reaction force is the force of the ball on the bat.

Tags

NGSS.MS-PS2-1

• 2

• 4

• 1

• same amount

Tags

NGSS.MS-PS1-1

The diagrams show forces acting on a toy car as it moves to the right. Which diagram shows

the toy car that will most likely accelerate to the right based on these conditions?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2