2nd 6-Weeks - Week #2 Exam Review

Scientists found an unknown substance in the soil. When tested, they found the following elements in the substance, (potassium, carbon, and oxygen). Would this substance be organic or inorganic?

• organic

• inorganic

• neither because the substance does not have any organs

Tags

NGSS.MS-PS1-1

The picture is a compound molecule of methane. Which of the following represents the formula for methane.

• C4H

• H4C

• C4H4

• HC

Tags

NGSS.MS-PS1-1

How many elements in the formula for baking soda?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

For 4th of July, we popped fireworks at my parents house. The fireworks exploded into beautiful designs of red, blue, green, and white. What is the reason for the different colors in the firework display?

• The element burned at different temperatures.

• There were four different elements.

• There was one element that popped at different heights.

• The elements had nothing to do with the color.

Which of the following formula could the compound molecule above represent?

• HCMgO

• H3Mg2O9

• Mg2HC6

• O5H2Mg3C

Tags

NGSS.MS-PS1-1

Jaime pours to clear solutions into a beaker and the new solution turns cloudy, bubbles began to form, and some precipitate forms at the bottom of the beaker. What can you conclude from the experiment.

• The gas production (bubbles) is evidence of a physical change.

• The new cloudy solution is evidence of a physical reaction.

• The precipitate formation, new cloudy solution, and gas production are evidence of a chemical reaction.

• The formation of precipitate is evidence of a chemical solution.

Tags

NGSS.MS-PS1-2

In the picture above, the convection currents in the asthenosphere will most likely cause of which of the following?

• seafloor spreading,underwater mountain ridges, and islands

• earthquakes

• the creation of old seafloor to replace the new seafloor

• converge the two oceanic plates

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

What is the total number of atoms in the formula above?

• 15

• 30

• 45

• 4

Tags

NGSS.MS-PS1-1

According to the picture, which of the following fossils was found on all 5 continents and therefore evidence that all 5 continents were once one large land mass, Pangea?

• Cynognathus

• Glossopteris

• Lystrosaurus

• Mesosaurus

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Which of the following is true about the compound above?

• It contains 2 atoms of Sulfur (S)

• It is organic

• It contains 2 elements

• It is inorganic

Tags

NGSS.MS-PS1-1