2-1
What are the horizontal rows of the periodic table called?
Periods
What is a compound?
A compound has identical molecules that are composed of different types of atoms
What is a molecule?
Atoms grouped together (after the bonding process)
Metals have good conductors. (True or False)
What are the vertical rows of the periodic table called?
Groups
What is a mixture
A mixture is not bonded and can be separated easily.
Explain why the bond in a nitrogen molecule is called a triple bond
Its because Nitrogen requires three more atom molecules to become stabilized
Is metal non-ductile or ductile?
Ductile
What is the smallest unit of matter in chemical properties?
Atoms
What happens when there is a missing electron in a ring?
The atom becomes unstable.
How does a “not-stable” element become a “stable element?
By bonding
Is nonmetal brittle?
Yes
For Bohr-Ruthford diagrams, how many electrons are on the first shell?
What do atoms do to gain stability? Explain.
They create an ion bond; Ion bonds are when two atoms gain or lose electrons.
What holds the bonded atoms together?
lines that connect each particles
Is metal lustrous or dull?
lustrous
How are chemical elements in Periodic Table grouped as?
Grouped with elements that has similar properties.
What happens in sodium ions? (Sodium has 11 atoms)
It becomes Na+ because sodium loses an electron.
What is the main difference between the covalent and ionic bond?
Ionic Bond- Bond that connects a non-metal and a metal element
Covalent bond- Bond that connects the same signed-elements
Is metal low melting point?
No, High melting point