Chemistry 2

Which of the following subatomic particles is found in the nucleus of an atom and does not have a positive or negative charge?

• Electron

• Proton

• Neutron

• Molecule

Which of the following Elements have similar chemical properties based on their position on the Periodic Table?

• Carbon, C and Nitrogen, N

• Sulfur, S and Chlorine, Cl

• Sodium, Na and Potassium, K

• Barium, Ba and Bromine, Br

When comparing metals, metalloids, and nonmetals, which of the following set of properties would best describe nonmetals?

• Shiny, semiconductors, and malleable

• Shiny, ductile, and brittle

• Dull, poor conductors, and brittle

• Dull, semiconductors, and ductile

Look at the Chemical reaction below

6CO₂ + 6H₂O + Light energy → C₆H₁₂O₆ + 6O₂

Which statement is true?

• There are 2 total Carbon atoms

• There are 3 total Oxygen atoms

• There are 18 total Oxygen atoms

• There are 29 total Hydrogen atoms

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The teacher cut a 5 cm piece of Magnesium and placed it in a test tube containing Hydrochloric acid. Students observed bubbles and a cloudy, white vapor rising up from the Magnesium ribbon. Which of the following is not evidence that a chemical reaction occurred between the Magnesium and Hydrochloric acid?

• A cloudy, white vapor was formed.

• The students observed bubbles

• The magnesium was cut into a 5 cm piece

• A new substance with different properties was formed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The table shows the density of different known substances. A student measured the volume of a piece of aluminum using water displacement. The volume was 3.0 cm³. Using the volume and density measurements, calculate the mass in grams of aluminum in the student's sample.

• 0.9 g/cm³

• 2.97 g/cm³

• 33.9 g/cm³

• 8.1 g/cm³

Tags

NGSS.MS-PS1-2

Which element is represented by this model?

• Carbon, C

• Boron, B

• Nitrogen, N

• Sodium, Na

Tags

NGSS.MS-PS1-1

Based on the Periodic Table, which of the following statements is true?

• Cobalt and Nickel are in period 3 so they each have three energy levels.

• Krypton and Xenon have a full outer shell of electrons.

• Cesium has two more protons than Barium.

• Nitrogen and Oxygen have similar chemical properties.

Tags

NGSS.MS-PS1-1

The table shows the different combination of elements in compounds. Which of the following statements is true?

• Chemical formulas are used to identify the number of atoms of each element present in a compound.

• The chemical formulas of Ethane and Propane are the same because each contains Carbon and Hydrogen.

• Chemical formula names are determined by the number of Hydrogen atoms present in the formula.

• Chemical formulas that contain subscripts are the only chemical formulas that are actual compounds.

Tags

NGSS.MS-PS1-1

Which of the following group of elements on the Periodic Table is the least reactive?

• Alkali metals

• Alkaline Earth metals

• Halogens

• Noble gases