Lab Aids Chemistry 8.1 -8.3

Which of the following can describe ionic compounds at standard temperature and pressure?

• solid

• liquid

• gas

• all of the above

Which of the following can describe ionic compounds at standard temperature and pressure?

• low melting and boiling point temperatures.

• high melting and low boiling point temperatures

• high melting and low boiling point temperatures.

• high melting and boiling point temperatures

Tags

NGSS.HS-PS1-3

Which of the following can describe ionic compounds at standard temperature and pressure?

• hard and brittle

• soft and durable

• hard and durable

• soft and brittle

Tags

NGSS.HS-PS1-3

When ​ (a)   into a liquid or​ (b)   in a solution ​ (c)   compounds can conduct electricity.

• melted
• dissolved
• ionic
• covalent
• molecular
• vaporized

Tags

NGSS.HS-PS2-5

Since Ca²⁺, Li⁺, Al³⁺, N^-3, and Br^- consist of a single type of ion, they are referred to as ______________ ions.

Since CO₃^2-, NH₄⁺, HCO₃^-, PO₄^-3, and C₂O₄^2- consist of a group of different atoms with excess charge, they are referred to as ______________ ions.

Which elements on the periodic table require Roman Numerals in their names because they can have different oxidation states (may lose different numbers of electrons) depending on what they react with.

• halogens

• alkali metals

• transition metals

• noble gases

Match the following element to its most common oxidation state.

• +2

• I (Iodine) and Cl (Chlorine)

• -1

• Zn (Zinc) and Cd (cadmium)

• +1

• N (nitrogen)

• -3

• Selenium (Se)

• -2

• silver (Ag)

Which of the following can describe molecular (covalent) compounds at standard temperature and pressure? Mark all that apply.

• solid

• liquid

• gas

• none of the above

Tags

NGSS.MS-PS1-4

Which of the following can describe molecular (covalent) compounds at standard temperature and pressure?

• Can conduct electricity

• Cannot conduct electricity

• Can conduct electricity only after being melted.

• Can conduct electricity only after being dissolved.