Chemical Reaction Test

Type your Name

Block

• Block 1
• Block 4
• Block 5
• Block 6

Which task in the kitchen is an example of a physical change?

• frying an egg
• baking a cake
• melting butter
• toasting bread

Which of the following is the simplest form of matter ?

• Molecules
• Compounds
• Elements
• Mixture

Which is a physical change?

• a piece of wood burning
• a copper roof changing color
• rust forming on an iron fence
• a sheet of paper shredding

When iron combines with oxygen in a moist environment, rust forms because of a

• chemical reaction.
• physical reaction
• change in density.
• change in temperature

Which action results in a chemical change?

• apples being cut into slices
• wood burning in a fireplace
• wet clothes drying on a clothesline
• snow being shoveled off of a sidewalk

Which of the following is an element ?

• alloy
• Selenium
• Hypochlorite
• Carbohydrate

Which pair of elements have similar properties?

• Be and Cr
• Ba and Si
• Ca and Sr
• N and Na

Which element has the same valency as the element shown in the diagram ?

• Li
• Sn
• Al
• Ca