Atomic Structure + Periodic Table Flashcards
Definition of an atom
An atom is the smallest part of an element that can exist.
Definition of a molecule
A molecule is a group of two or more atoms joined together by covalent bonds.
What is meant by the term atomic number
The number of protons in an atom of an element
What is meant by isotope
Atoms of the same element with different numbers of neutrons
What is meant by the mass number
The mass number of an atom is its total number of protons and neutrons.
What is meant by relative atomic mass
The relative atomic mass of an element is the average mass of its atoms, compared to 1/12th the mass of a carbon-12 atom.
List periodic table element qualities.
Relative atomic mass
Atomic number
True or false:
- Metals conduct heat
- Metals are not malleable
- Metals are poor conductors of electricity
- True
- False
- False
True or false?
- Non metals are brittle
- Non metals are more dense than metals
- Non metals have low melting and boiling points
- True
- False
- True
Where are protons found?
In the nucleus
What is the charge of a proton?
+1
What is the mass if a proton?
1
Where are neutrons found?
In the nucleus
What is the charge of neutrons?
0
What is the mass of neutrons?
1
