2nd 3 Week Review

According to the Chemical Compounds in the table below, how many atoms of Hydrogen are in Ethanol?

• 0

• 2

• 5

• 6

Tags

NGSS.MS-PS1-1

According to the chemical compounds table below, how many total atoms are in Glucose?

• 3

• 18

• 24

• 432

Tags

NGSS.MS-PS1-1

The diagram below is a model of a molecule of methane. What is the formula for Methane?

• CH₈

• C₈H₄

• CH₄

• C₈H₈

Tags

NGSS.MS-PS1-1

In the equation above, how many atoms are in the oxygen molecule?

• 2

• 0

• 1

• 3

Tags

NGSS.MS-PS1-1

Which information can be determined by a chemical formula?

• the structural arrangement of the atoms in a molecule

• the color of a molecule

• the size of the molecule

• the number of atoms of each element in a molecule

Which of the statements in the image are true?

• I and II

• III and IV

• I and III

• II and III

Which of the following formulas contain the same number of oxygen atoms

• Formulas I and II

• Formulas II and IV

• Formulas I, II, and III

• Formulas I, II, and IV

What was the mass of the CO₂ gas that escaped during the reaction?

• 10.9 g

• 38.7 g

• 1.78 g

• 24.8 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student placed 2 grams of baking soda in a balloon and 100 mL of vinegar in an Erlenmeyer flask. After stretching the opening of the balloon across the neck of the flask, the student raised it to dump the baking soda into the flask. He immediately observed foaming bubbles in the flask, and the balloon began to expand. The student concluded that -

• only a physical change was occuring

• the baking soda and vinegar were products of a chemical reaction

• the gas was oxygen

• the bubbles indicated a chemical change was occuring

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The results of which of the investigations indicates that the substances least likely reacted chemically?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-2