Atomic Structure Review

Question 1

When comparing an atom in the ground state and an excited state, what is the difference?

Accepted Answer

the atom in an excited state has more energy

Question 2

The nucleus of an atom is made up of...

Accepted Answer

protons and neutrons

Question 3

Which subatomic particle has a negative charge?

Accepted Answer

electron

Question 4

If an element has 11 protons, what is also 11 in this atom?

Accepted Answer

the atomic number and the amount of electrons

Question 5

In an atomic model that contains a nucleus, positive charge is...

Accepted Answer

concentrated in the center of an atom

Question 6

J.J. Thomson's experiments provided evidence that an atom...

Accepted Answer

contains negatively charged particles

Question 7

To find the number of neutrons in an atom, you would subtract...

Accepted Answer

atomic number from mass number

Question 8

Which of the following is NOT part of John Dalton's atomic theory?

Accepted Answer

atoms contain subatomic particles

Question 9

Who placed electrons in energy levels orbiting the nucleus like planets around the sun?

Accepted Answer

Bohr

Question 10

This scientist's atomic model had randomly dispersed electrons resembling "plum pudding."

Accepted Answer

Thomson

Question 11

Which of the following is unique for any given element?

Accepted Answer

the number of protons

Question 12

In Niels Bohr's model of the atom, electrons move...

Accepted Answer

like planets orbiting the sun

Question 13

Which statement is true about oxygen-17 and oxygen-18?

Accepted Answer

they are isotopes of oxygen

Question 14

If an atom has 32 protons and 38 neutrons, what is its mass number?

Accepted Answer

70

Question 15

Who discovered the electron by using a cathode ray tube?

Accepted Answer

Thomson

Question 16

This is the name of a positively charged sub-atomic particle.

Accepted Answer

proton

Question 17

What does the electron cloud model describe?

Accepted Answer

the most likely locations of electrons in atoms

Question 18

Which scientist discovered compounds are formed by joining two or more elements?

Accepted Answer

Dalton

Question 19

This scientist discovered the nucleus.

Accepted Answer

Rutherford

Question 20

Whose atomic model would represent an atom like you see below?

Accepted Answer

Bohr

Questions 20