2.1 The Structure Of Atoms Flashcards Preview

Chemistry Chapter 2 - Atomic Structure > 2.1 The Structure Of Atoms > Flashcards

Flashcards in 2.1 The Structure Of Atoms Deck (12):
1

Where is most of the mass of an atom concentrated?

Nucleus - protons and neutrons.

2

What is the majority of the volume of an atom due to?

The electrons - nucleus small compared to total size of atom.

3

What is the relative mass and charge of a proton?

Mass: 1
Charge: +1

4

What is the relative mass and charge of a electron?

Mass: 5x10^-4
Charge: -1

5

What is the relative mass and charge of a neutron?

Mass: 1
Charge: 0

6

What are nucleons?

Protons and neutrons - particle in nucleus of atom

7

What is the atomic number?

Number of protons in nucleus of an atom.

8

What is the mass number?

Number of protons and neutrons in nucleus of an atom.

9

How many protons are in the nucleus?

Ame as number of electrons since atom is neutral.

10

How many neutrons are in the nucleus?

Mass number - atomic number.

11

What is a positive ion?

Charged particle formed when atom loses electrons, fewer electrons than protons.

12

What is a negative ion?

Charged particle formed when atom gains electrons, more electrons than protons.