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WorksheetsBenchmark Review - Atoms and PT
Total questions: 15
Worksheet time: 8mins
Elements on the periodic table ALL have different atomic masses.
True - same rule for the atomic numbers
False - many elements have the same atomic masses
Carbon has 12 protons.
True
False
Oxygen has _____ protons and electrons.
6
8
15
16
Hydrogen is in a different chemical family than Carbon and Oxygen.
True - Hydrogen is an Alkali Earth Metal, Period 1
False - all three are non-metals
Which of the following 2 options correctly identifies a water molecule?
H2O
HOO
2 Hydrogens, 1 Oxygen
1 Hydrogens, 2 Oxygens
H2O
Water is an element.
True
False
Water is a molecule.
True
False
Water is a compound.
True
False
Carbon Dioxide is a(n) __________________.
element
molecule
compound
Structural differences in bonds would refer to all of the following except
straight rods
bent rods
colors
different elements
none of these
What is true about this water molecule?
it is an element
the hydrogens are separated by a different element
the bond is bent and not straight with rods
none of these
it is a compound
What would be the chemical formula for this image?
NOH
N2H2
NH3
N3H
What would be the chemical formula for this image?
CH
C2H2
CH4
C2H6
What would be the chemical formula for this image?
CH2
C2H2
CH4
C2H6
Which 3 pictures would best represent good structure and scale of molecules?
