Pure Substances & Mixtures

What is the main difference among elements, compounds and mixtures?

• There is no difference among elements, compounds and mixtures

• Their states of matter while at room temperature

• The way in which their atoms are arranged and the bonds between them

• The amount of matter and how dense that matter is

According to the chart, Cobalt is classified as what type of matter?

• Element

• Compound

• Mixture

While studying, you learn that the sugar that you eat has a chemical symbol of C₁₁H₂₂O₁₁. Based on that info, how can you classify sugar?

• Element

• Compound

• Mixture

Water is classified as a ___________

• Pure substance

• Mixture

• Element

• Colloid

How can a mixture of iron filings and sand that are the same size be separated?

• By dissolving the sand in saltwater

• Using a magnet

• Using heat

• Using a sifter

The smallest unit of a compound is called a ____________

• atom

• piece

• bit

• molecule

According to this chart, Platinum (which has a chemical symbol of Pt), is made up of how many kinds of atoms?

• 9,524,976

• 3

• 2

• 1

Which one of these do compounds and mixtures have in common?

• Both are made up atoms that are chemically bonded

• Both are made up of different types of atoms

• Both are made up of particles that are evenly distributed

• Both have a chemical symbol

This salad dressing has particles that settle to the bottom and must be stirred to be distributed. It will be considered what type of mixture?

• solution

• colloid

• suspension

• homogeneous

Can a mixture be made up of only elements and no compounds? Explain you answer. (Complete sentences only)