Experiment 1: Formula unit SK015

Name the lab equipment pictured

• Evaporating Dish

• Crucible

• Mortar and pestle

Name the lab equipment pictured

• Tongs

• Forceps

• Spatula

Theoretically, what is the formula unit of zinc chloride?

• ZnCl

• ZnCl₂

• Zn₂Cl

Define the term compound?

• It is made up of only one kind of atom

• A set of chemical symbols showing the amount of each element present in a compound

• A substance composed of 2 or more elements that are chemically combined

A formula with the lowest whole number ratio of elements in a compound is called

• Molecular Formula

• Chemical Formula

• Empirical Formula

A formula with the actual whole number ratio of elements in a compound is called

• Molecular Formula

• Chemical Formula

• Empirical Formula

What is the suggested volume of measuring cylinder needed to be used in this experiment?

• 1 mL

• 100 mL

• 10 mL

What gas will be released when HCl solution is poured into a crucible containing zinc powder?

• Oxygen gas

• Hydrogen gas

• No gas will be released

From the video, what is the function of white tile?

• To support the hot crucible when removing it from hot plate

• To be placed inside the analytical balance

• To cover the crucible during cooling

What is the meaning of formula unit of a compound? (2 points)

• The actual ratio of elements in the compound

• The empirical formula of the compound

• The simplest ratio of elements of the compound

• The molecular formula of the compound