Naming Covalent Compounds — Unit test Answers

Formaldehyde is an organic compound. Each molecule includes two hydrogen (H) atoms, one oxygen (O) atom, and one carbon (C) atom. Below are the dot structures for each of these elements.Which diagram shows how the covalent bonds most likely form in a formaldehyde molecule?

During a test, what can a student use to identify what type and how many atoms are in a chemical compound?

Suna passes an electric current through a sample of clear, colorless, and odorless liquid. As the experiment continues, bubbles form, and the volume of liquid decreases. Suna collects samples of two colorless, odorless gases that bubble out of the liquid. One of the gases burns. Neither the original liquid nor the other gas burns.Which is the best explanation of her results?

Jenny is studying a compound that has two oxygen atoms and one nitrogen atom. Which statement describes the subscripts she will use to write the chemical formula?

Donald is writing a chemical name from a chemical formula. He has just identified that there are five atoms of oxygen bonded with two atoms of phosphorus.

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How many atoms of each element are in the chemical formula NH4NO3?

The equation K2O represents the ionic bond between potassium and oxygen. What is the name of the compound?

What does the chemical formula C3H6O2 tell about a molecule of the compound it represents?

What causes an ionic bond to form between sodium and chlorine?

Which term best describes all atoms in ionic bonds?

What is a limitation of using a chemical formula, such as C6H12O6, to represent a compound?

What should be the ending of the second element in a covalent compound?

Which is the only element in group 1 on the periodic table that forms covalent bonds?