Unit 1-1.2- Atomic structure Flashcards
1
Q
What does the nucleus contain?
A
The nucleus in the center of an atom contains two different types of particle, called protons and neutrons.
2
Q
What type of a charge do protons have?
A
Positive
3
Q
What are electrons?
A
Electrons are tiny, negatively charged, particles that go around the nucleus
4
Q
What charge overall does an atom have?
A
An atom overall has no charge.
5
Q
What is the atomic number?
A
The number of protons the atom has.
6
Q
In what order are the elements arranged in the periodic table?
A
In order of their atomic number.
7
Q
What also does the atomic number tell us?
A
The number of electrons.
8
Q
What is the mass number?
A
The number of protons and the number of neutrons.
