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Periodic Table
Periodic Trends
Element Identification
Element Identification 2
BONDS
100
What number tells you the number of protons and electrons?
Atomic Number
100

is H2O a covalent or ionic bond

Covalent bond (Shared)

100
What is the name of element number 1?
Hydrogen
100
What element has the symbol Xe?
Xenon
100

The atoms in compounds are held together by

Chemical Bonds

200
How do you figure out the number of neutrons?
Subtract the atomic number from the atomic mass
200
What particle has a positive charge?
Proton
200
What element has an atomic mass of 238.
U, Uranium
200
What element has 17 electrons?
Chlorine
200

  • An atom’s____________(electrons FARTHEST from the nucleus) are what form bonds

 valence electrons

300

IS NaCl (salt) a covalent or ionic bond

Ionic

300

What particle has no charge?

Neutron

300

  • When atoms share two electrons, the bond is called a __________

Covalent Bond

300
What element's symbol is K?
Potassium
300

The study of chemistry begins with the basic unit of matter, the________

 atom

400

Ionic bonds are _______ than covalent bonds

stronger

400
What particle has a negative charge?
Electron
400
Which element has 42 as its atomic number?
Mo, Molybdenum
400

What element is a gas with 18 protons?

Argon

400

  • Atoms contain ___________ that are even smaller

subatomic particles

500
What does the term 'valence electrons' mean? (2 things)
number of electrons on outermost shell, tells how reactive an element is
500
What subatomic particle is not inside the nucleus?
Electrons
500

What element has the elemental symbol Sb?

Antimony

500

What element is a sold named after a state with an atomic mass of 251?

Californium

500

  • The structure that results when atoms are joined together by covalent bonds is called a _________ 

molecule