Basic Ideas About The Atom - Atomic Structure

Question 0

Where is the electron found?

Answer 0

Surrounding the positively charged neuclius.

Question 1

What are the three fundamental particles in an atom?

Answer 1

The electron
The proton
The neutron.

Question 2

What is the mass of an electron relative to a proton?

Answer 2

1/1840

Question 3

*Not essential - what is an electrons actual mass?

Answer 3

9.109x10^(-28)g

Question 4

What are electrons responsible for?

Answer 4

An elements chemical properties.

Question 5

What charge does a proton have?

Answer 5

+1

Question 6

What is a proton’s mass said to be?

Answer 6

1

Question 7

*not essential. - what is the protons actual mass?

Answer 7

1.6725x10^(-24)g

Question 8

What is the number of protons equal to?

Answer 8

The atomic number (Z) of an element

Question 9

Where are protons found?

Answer 9

The nucleus of an atom.

Question 10

What do protons dictate?

Answer 10

They dictate the number of electrons since the number of protons and electrons are equal in a neutral species.

Question 11

What is the mass of a neutron relative to a proton.

Answer 11

1

Question 12

*Not essential- What is the actual mass of a neutron?

Answer 12

1.6748x10^(-24)g

Question 13

Where are neutrons found?

Answer 13

In the nucleus.

Question 14

What is the role of neutrons in the atom?

Answer 14

They prevent the nucleus from becoming unstable due to the positive charges on the protons.

Question 15

What is the umbrella term for neutrons and protons?

Answer 15

Nucleons.

Question 16

What does the sum of the nucleons In the nucleus called?

Answer 16

The mass number (A)

Question 17

Where are the mass number and atomic number placed on a periodic table?

Answer 17

Mass number - top left corner

Atomic number - bottom left corner.

Question 18

What “defines” an element?

Answer 18

The atomic number.