Quarter 2 Chemistry Test Review

You can always see matter.

Everything you see is matter.

Most of the elements are nonmetals

Some elements are made in a Science lab.

Pizza would be considered a solution and not a mixture.

Write T (true) or F (false) to indicate whether each statement is true or false.

A

B

C

Element Symbol Protons Electrons Atomic # Neutrons Mass #

Sodium Na 11 23

Gold Au 79 197

Zinc Zn 30 35

Calculate and write-in the proper number for each box.

Atomic # = e- = P+

Mass # = n + P+

True or False?Atoms with equal numbers of electrons and protons have a positive charge.

Formula Number of Elements Names of Element

Number of Atoms for each Element

Total Number of Atoms in one Molecule

MgO(example) 2 Magnesium

Oxygen11 2

SO2

CH4

Write-in the proper answer(s) to complete the chart.

Based on the following data, rank the three solutions in order from most dense to least dense:

Data Table

Trial 1 Test Red vs. BlueTrial 1 Blue was more dense than Red

Trial 2 Test Red vs. GreenTrial 2 Green was more dense than Red

Trial 3 Test Blue vs. GreenTrial 3 Blue was more dense than Green

Most dense: Middle density: Least dense: