OSM Properties of Matter SOL Review

An equation for a chemical reaction is shown. NaOH + HCl → NaCl + H₂O Which statement provides evidence that mass is conserved in the reaction?

• A) Two new substances are formed in the products.

• B) Water is one of the products, but not one of the reactants.

• C) Two hydrogen atoms are in the reactants, and two hydrogen atoms are in the products.

• D) One chlorine atom pairs with one sodium atom in the products, and one chlorine atom pairs with one hydrogen atom in the reactants.

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NGSS.MS-PS1-5

How many grams of sulfuric acid were used in the reaction?

• 62 g

• 98 g

• 36 g

• 100 g

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which statement describes an action that most likely resulted in a chemical reaction?

• A. A pan of water was heated on a stove, and steam formed.

• B. A liquid was mixed with another liquid, and a precipitate formed.

• C. A liquid was sprayed into the air, and a sweet odor was smelled.

• D. A child blew through a wand filled with soap, and bubbles were produced.

Tags

NGSS.MS-PS1-2

Which of these observations is an indication that a chemical reaction has occurred?

• The vinegar took the shape of the container in step 1.

• The steel wool sank into the vinegar in step 3.

• The temperature of the vinegar increase during step 4.

• The steel wool changed shape during step 6.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Based on these observations, which statement contains the best evidence that a chemical reaction occurred?

• There is a change in shape.

• There is a change in volume.

• The two liquids mix into a solution.

• The two liquids form a new substance.

Tags

NGSS.MS-PS1-2

• The mass increases.

• The mass decreases.

• The mass remains constant.

• The mass first decreases and then increases.

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NGSS.MS-PS1-5

Which statement best describes evidence that a chemical reaction occurs as a cake bakes?

• The water in the cake batter evaporates.

• The cake rises as gas bubbles form in the baking cake.

• The cake takes the shape of the container in which it is baked.

• The water in the cake batter is used to keep the cake moist as it bakes.

Tags

NGSS.MS-PS1-2

The chemical formula for methane is CH₄. Which statement describes the atoms present in FOUR molecules of methane?

• A) Four molecules of methane would contain 1 atom of carbon and 4 atoms of hydrogen.

• B) Four molecules of methane would contain 4 atoms of carbon and 1 atom of hydrogen.

• C) Four molecules of methane would contain 4 atoms of carbon and 16 atoms of hydrogen.

• D) Four molecules of methane would contain 16 atoms of carbon and 16 atoms of hydrogen.

Tags

NGSS.MS-PS1-1

Sodium sulfate (Na2SO4) is used to produce many products. Which elements are represented in the formula AND how many atoms of each element are represented in the formula?

• A) Sodium (2), Sulfur (1), Oxygen (4)

• B) Sodium (1), Sulfur (1), Oxygen (4)

• C) Sodium (2), Sulfur (2), Oxygen (4)

• D) Sodium (2), Sulfur (1), Oxygen (3)

Tags

NGSS.MS-PS1-1

Oxygen and oxygen-containing compounds are involved in many different reactions. Which balanced equation represents a reaction that involves 14 atoms of oxygen?

• NH₄Cl + KOH → NH₃ + H₂O + KCl

• 2Na + 2H₂O → 2NaOH + H₂

• 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

• 4Fe + 3O₂ → 2Fe₂O₃

Tags

NGSS.MS-PS1-5