WorksheetsOh the science.
Total questions: 15
Worksheet time: 4hrs 45mins
Elements with the same number of valence electrons are in the same...
Group/Family
Row
Group/Period
Energy level
Which one of these is wrong about the Bohr Diagram of Neon (Ne)?
Valence Electron = 7
Neutrons=10
Protons=10
Electrons= 10
Which one of these metalloids has six valence electrons and is on the same period as Iridium (Ir)?
Arsenic (As)
Tellurium (Te)
Polonium (Po)
Gold (Au)
Which one of these is not correct?
Neutrons don't have a charge.
Protons are positive. (+)
Electrons are negative. (-)
Neutrons are negative. (-)
Which one of these is not a characteristic of metals?
High melting point
Gas at room temp
Malleable
Ductile
What determines the position of an element on the periodic table?
The mass number.
The place where the scientist who discovered it wanted to put it.
The atomic number
The atomic number
All but one of these are the three main classifications of elements.
Non metals
Transition metals
Metals
Metalloids
Metalloids have all of these characteristics except one.
Found on the right side of the period table.
Somewhat conductive.
Somewhat malleable.
Touches the zigzag line on the periodic table.
Which one of these is incorrect about the Bohr Diagram of Chlorine (Cl)?
Protons = 16
Neutron = 18
Electrons = 17
Valence Electron = 7
What is an ion?
An atom with a positive or negative charge due to the loss or gain of one or more electrons.
A different version of an atom.
An atom with the same number or electrons but different number of neutrons.
An element with similar chemical structures to the elements above and below it.
Which element has one valence electron and is on the same period as Bismuth (Bi)?
Hydrogen (H)
Cesium (Cs)
Hydrogen (H)
Radon (Rn)
Why are noble gasses very unreactive?
Because they are all in the same column.
Because they are gases so it's hard for them to combine with anything.
Because they have a complete set of valence electrons.
Because they don't like the other elements so they don't like combining with them.
Which element is in the same period as Krypton (Kr) but the same group as Carbon?
Potassium (K)
Silicon (S)
Germanium (Ge)
Arsenic (As)
Which one of these is not a noble gas?
Helium (He)
Neon (Ne)
Chlorine (Cl)
Argon (Ar)
What is mass number?
The number of protons in the nucleus of an atom.
A measure of an objects resistance to acceleration when force is applied.
The total number of protons and neutrons in a nucleus.
How much a person weighs in kilograms.
