Exploring Pure Substances and Mixtures

How can you physically separate the components of a trail mix?

• By heating

• By handpicking the pieces

• By dissolving in water

• By using a magnet

What is the smallest unit of an element that maintains its chemical properties?

• Molecule

• Atom

• Mixture

• Compound

Which of the following is an example of an element?

• Water

• Carbon dioxide

• Hydrogen

• Salt

What holds the atoms together in a compound?

• Physical force

• Magnetic force

• Gravitational force

• Chemical bond

Which of the following is a compound?

• Oxygen (O2)

• Sulfur (S)

• Gold (Au)

• Water (H2O)

What type of mixture is pizza?

• Homogeneous

• Colloid

• Solution

• Heterogeneous

Which of the following is a homogeneous mixture?

• Pizza

• Trail mix

• Orange juice without pulp

• Salad

What type of mixture is milk?

• Suspension

• Colloid

• Heterogeneous

• Homogeneous

Which of the following is a suspension?

• Milk

• Honey

• Salt water

• Salad dressing

What type of mixture is a solution?

• Colloid

• Homogeneous

• Suspension

• Heterogeneous