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Atomic structure
Calculating particle numbers
Valence electrons
Covalent Bonds
Ionic Bonds
100
This is the center of the atom.
What is the nucleus?
100
Beryllium has an atomic number of 4, it has this many protons.
What is 4?
100
This is the definition of valence electron.
What is the number of electrons in an atom's outermost energy level?
100
Covalent bonds are formed when atoms do this.
What is share electrons?
100
When atoms form a molecule by an ionic bond, they do this.
What is gain or lose electrons?
200
The three particles found inside an atom.
What is proton, neutron and electron?
200
Florine has an atomic number of 9,it has this many electrons.
What is 9?
200
This is what the elements in the same group on the periodic table have in common.
What is they have the same number of valence electrons?
200
When hydrogen forms a bond with another hydrogen, this is the chemical formula.
What is H2?
200
When an atom has more protons than electrons, it is this.
What is a positive ion?
300
These two particles are found inside the nucleus of the atom.
What are proton and neutrons?
300
Potassium has 19 electrons, this is its atomic number.
What is 19?
300
Calcium has this number of valence electrons.
What is 2?
300
When carbon and hydrogen form a molecule, this is the chemical formula.
What is CH4?
300
When an atom has more electrons than protons, it is this.
What is a negative ion?
400
This is the charge of a proton.
What is positive?
400
Phosphorus has an atomic mass of 31 and an atomic number of 15, it has this many neutrons.
What is 16?
400
Iodine has this number of valence electrons.
What is 7?
400
When nitrogen and hydrogen form a molecule, this is the chemical formula.
What is NH3?
400
When magnesium and oxygen bond, this is the chemical formula. (extra time)
What is MgO?
500
You can find out the number of neutrons by knowing these two numbers.
What is the atomic mass and the atomic number?
500
Krypton has 36 electrons and an atomic mass of 85, this is the amount of protons Krypton has.
What is 36?
500
Krypton has this number of valence electrons.
What is 8?
500
When phosphorus and chlorine form a molecule, this is the chemical formula. (extra time)
What is PCl3?
500
When beryllium and fluorine form a molecule, the chemical formula is this.
What is BeF2?