Physics Multiple Choice Worksheet

The nucleus of an atom is charged

• negatively.

• positively.

• both of these

• none of the above

The electric charge of all electrons

• vary from ion to ion.

• are identical.

• vary from atom to atom.

Compared to the mass of a proton, the mass of an electron is

• very much less.

• greater.

• identical.

The vast numbers of electrons in a coin don't fly off the surface because

• they are attracted by an equal number of protons.

• they are strongly bonded to their atoms.

• mutual repulsion is incomplete.

• all of the above

Tags

NGSS.HS-PS1-3

Which force binds atoms together to form molecules?

• electric

• gravitational

• centripetal

• nuclear

• none of the above

In an electrically neutral atom the number of protons in the nucleus is equal to the number of

• electrons that surround the nucleus.

• neutrons in the nucleus.

• both of these

• none of the above

Tags

NGSS.MS-PS1-1

If you strip electrons from an atom, the atom becomes a

• positive ion.

• different element.

• negative ion.

To say that electric charge is conserved is to say that electric charge

• is a whole-number multiple of the charge of one electron.

• occurs in an infinite variety of quantities.

• will interact with neighboring electric charges.

• can neither be created nor destroyed.

A difference between electric and gravitational forces is that electric forces include

• the inverse-square law.

• repulsive interactions.

• infinite range.

• separation distance.

• none of the above

Tags

NGSS.HS-PS2-4

When the distance between two charges is halved, the electric force between the charges

• doubles.

• is reduced by one-quarter.

• quadruples.

• is half.

• none of the above

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5