Answers26-27 WHS-Chemistry-1stSixWeeksThe History and Arrangement of the Periodic Table

The History and Arrangement of the Periodic Table — Unit test Answers

0 verified answers
21
Free Preview

Which is another name for groups of elements?

A
actinides
B
families
C
halogens
D
periods
22
Free Preview

The table shows the percentages of hydrocarbons that are found in a sample of crude oil.HydrocarbonsPercentageparaffins30naphthenes49aromatics15asphaltics6.0Based on the given information, what is the best classification for this sample of crude oil?

A
an element
B
a pure compound
C
a pure substance
D
a mixture
23

What can a drop of liquid mercury be described as?

A
a pure substance and a compound
B
an impure substance that is reactive
C
an impure substance that is unreactive
D
a pure substance and an element
24

How many valence electrons does lithium (Li) have available for bonding?

A
1
B
2
C
3
D
4
25

Which is the electron configuration for bromine?

A
1s22s22p63s23p64s23d104p5
B
1s22s22p63s23p64s23d104p6
C
1s22s22p63s23p44s23d104p5
D
1s22s22p63s23p64s23d94p5

Did you find these answers helpful?