Unit Test — Unit test Answers

The table describes the properties of four compounds.Which compounds are most likely ionic?

Harvey mixes two liquids. Which observation of the new mixture most likely indicates a precipitate is forming?

Hydrochloric acid and sodium hydroxide can be combined to form sodium chloride and water. Which best explains the reaction?

Chemical A and Chemical B react in an exothermic reaction. What can be known about what will happen when Chemical A and Chemical B are mixed together?

Which are the products in the equation CH3SH + 4O2 → CO2 + SO2 +2H2O? Check all that apply.

Thirty grams of lead oxide and fifteen grams of ammonia react completely to produce solid lead, nitrogen gas, and liquid water. What will be approximate mass of all three products?

"Na2SO3” represents sodium sulfite.What does the 4 mean in the formula 4Na2SO3?

Sal drew the electron dot diagram of an aluminum atom as shown.

How many atoms of each element are in the chemical formula Ca(OH)2?

What else is produced during the replacement reaction of silver nitrate and potassium sulfate?2AgNO3 + K2SO4 Ag2SO4 + ________

Which refers to the type of chemical bond that involves the transfer of electrons between atoms?

Which balances the equation Mg + O2 → MgO?

Shameeka is studying for an exam. She took the notes below about calcium and chlorine, which are known to form ionic bonds.Calcium, which is a metal, donates 2 electrons to chlorine.The individual calcium atoms become ions with a negative 2 charge. The bond between calcium and chlorine makes the atoms stable. Calcium and chlorine attract each other. Which best describes Shameeka’s error?

To what extent do covalent compounds conduct electricity?

Which is most likely a covalent compound?

Which type of reaction has the general formula of AB + CD → AD + CB?

The Statue of Liberty is made out of copper and was once shiny and copper-colored. Over the years, the copper has gone through a process called oxidation, where it has changed into a new material.

Which ionic compound is used as a building material?

Which symbol in a chemical equation separates the reactants from the products?

Which is a characteristic of all ions?