Test 2 Flashcards
What are atoms made of
Tiny particles called electrons protons and neutrons
What makes up the nucleus
Neutrons and protons
What surround the nucleus
Electrons
What are the charges
Protons- positive
Electrons- negative
Neutrons- neutral
Do electrons and protons have the same charges?
Yes same amount but opposite charges
Do they attract or repel
Opposite charges atttract, so yes
What is the periodic table?
A chart containing info on all the atoms
What is the atomic number of an atom equal to
The number of protons in the nucleus
Can different atoms of the same element have a different number of neutrons
Yes
What are those atoms called
Isotopes
How are the atoms arranged in the periodic table
They are arranged to show characteristics and relationships btwn atoms or groups
What are isotopes
Same number of protons but different number of neutrons
How are atoms and elements related
A single atom makes up the element
What is an energy level
Where the electrons are located on different levels
How are electrons arranged in first 3 energy lvl
1- 2
2- 8
3-8
What is covalent bond
Sharing of
