Properties of Matter, Mixtures and Safe Handling

Classifying elements, mixtures and solutions, reading properties, and handling chemicals safely at home and at work.

9 questions, free, marked as you go with a worked explanation on every one.

What this covers

A bottle of household vinegar contains acetic acid dissolved in water. How is this classified?
In a cup of sweetened tea, sugar is dissolved in water. Which is the solute and which is the solvent?
A brine solution is made by dissolving 15 g of salt to make 300 g of solution in total. What is the concentration of the solution as a mass percent?
A WHMIS label shows a pictogram of a hand and a surface being eaten away. What does this warn a worker about?
Which of these is a chemical property of a substance rather than a physical property?
A metal block has a mass of 54 g and a volume of 20 cm³. What is its density, in grams per cubic centimetre?
Where are the metals found on the periodic table, and what is one property they share?
A worker needs to dilute a cleaning concentrate. She measures 120 mL of concentrate and adds water until the total volume is 1 500 mL. What percent of the final solution is concentrate?
Use the table. Which substance is classified as a mixture, not a pure substance?