Unit 1 retest

Which of these is not a compound?

• Baking soda

• A silver ring

• Vinegar

• Plastic Bottle

Which item listed below is an element?

• Water

• Hydrogen Peroxide

• Sulfur Dioxide

• Calcium

A new compound has just been made. Its formula is:

OCaHHeAuNNa

How many different elements make up this compound?

• 6

• 7

• 10

• 8

Is NaHCO₃ considered an element or compound?

• Compound

• Element

• Mixture

• Pure substance

What safety equipment is most important for Matthew to use when conducting his investigation?

• Latex gloves

• safety goggles

• beaker tongs

• fire extinguisher

Which an example of a chemical change is?

• Filtering Water

• Cutting Firewood

• Iron Rusting

• Crushing Ice

Which of the following best describes Chicken Noodle Soup?

• element

• mixture

• solution

• compound

Which one is not a chemical change?

• The liquid changes color

• light is emitting

• gas formed

• the liquid freezes

CaO and CO₂ are best classified as:

• Two Elements

• Two compounds

• One compound and one element

• One Element and two compounds

Which is NOT an element?

• lead

• tin

• bones

• gold