Pass Science

Which of these parts of an atom has a negative charge?

• electron

• proton

• neutron

• nucleus

Which part of the atom has a positive charge?

• electron

• proton

• neutron

• nucleus

The Law of Conservation of Mass states-

• That in order to conserve mass we should always recycle our waste.

• That conservation efforts are the only way to preserve the mass that exists in natural habitats.

• That the mass in chemical reactions can not be created nor destroyed, just rearranged.

• That you should use only the minimum amount of chemicals necessary in a chemical reaction in order to conserve your supply of that chemical.

Tags

NGSS.MS-PS1-5

A racecar accelerates at a rate 19 m/s/s. If the mass of the race car is 1600 kg, determine the net force acting on the car.

• 30,400 N

• 8,400 N

• 300 N

• 84 N

Tags

NGSS.MS-PS2-2

When an object is acted on by unbalanced forces, the object will -

• continue in the same direction

• continue at the same speed

• accelerate

• come to a stop

Tags

NGSS.MS-PS2-2

A student drops a beaker on the floor, breaking it. Which of the following should the student do FIRST?

• Tell the teacher about the accident.

• Find a new beaker to use.

• Look for a broom and dustpan.

• Have your lab partner clean it up for you.

Scientists perform many trials for each experiment because —

• they want to improve their public image

• they want to improve the reliability of the results

• they have to rewrite the hypothesis

• they have to decide how to publish the data

Tags

NGSS.MS-LS1-5

What is the temperature shown on the thermometer?

• -28 ° C

• -12 ° C

• -26 ° C

• -15 ° C

Tags

NGSS.MS-PS3-4

Structures A and B are located in the

• valence shell

• energy levels

• electron cloud

• nucleus

Tags

NGSS.MS-PS1-1

Where are electrons found in an atom?

• inside protons

• in the nucleus

• orbiting the nucleus

• covering the surface of protons