Chemical Properties — Unit test Answers
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Which element would most likely have chemical properties similar to that of magnesium (Mg)?
A
ArB
CaC
FD
Ni2
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The model below shows an atom of an element.
A
6B
8C
9D
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Which ranks these materials by the attraction between their atoms from the weakest to the strongest?
A
oxygen gas, liquid water, liquid honey, solid iron oreB
liquid water, liquid honey, oxygen gas, solid iron oreC
solid iron ore, liquid honey, liquid water, oxygen gasD
oxygen gas, liquid honey, liquid water, solid iron ore4
How does Rutherford’s model of the atom compare with Thomson’s model?
A
They both describe atoms as small, indivisible spheres.B
They both describe electrons as moving around the nucleus.C
They both describe electrons as being surrounded by the positive matter.D
They both describe atoms as being made up of positive and negative matter.5
The atoms in a sample are close together but can slide past one another. As the atoms lose energy, they move slower. The atoms become locked in place because of attractive forces between them.
A
gas to solidB
gas to liquidC
liquid to solidD
solid to liquid6
What was Johann Dobereiner’s contribution to the development of the periodic table?
A
He arranged the elements according to increasing atomic mass.B
He arranged the elements according to increasing atomic number.C
He identified triads of elements that had similar properties.D
He organized elements into four groups based on their properties.Did you find these answers helpful?
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