Final Review

In which step of the scientific method is information obtained through the senses?

• Drawing conclusions

• Making observations

• Analyzing data

• Revising a hypothesis

What happens when the data in an investigation does not support the original hypothesis?

• The scientist gives up and starts an investigation on a new topic

• The data must be incorrect and is thrown out

• The hypothesis is revised and retested

• The data are altered so that they support the original hypothesis

Which of the following is a pure substance

• Milk

• Air

• Trail Mix

• Carbon

A substance that is made up of only one kind of atom is a(n) _______________?

• Compound

• Homogeneous mixture

• Element

• Solution

Which of the following is a heterogeneous mixture?

• Water in a swimming pool

• Sugar water

• Trail Mix

• Copper

Which of the following is a physical change?

• Cutting a piece of paper in half

• Burning a piece of paper

• Rust forming on an iron fence

• Baking soda reacting to vinegar

Which of the following is a clue of a chemical change?

• Iron changes shape when pounded

• Gas bubbles form when vinegar and baking soda are mixed

• Steam coming off of boiling water

• The volume changed when you poured water into a different container

Matter that has a definite shape and definite volume is a _______________

• Solid

• Liquid

• Gas

• Plasma

A gas has

• A definite volume but no definite shape

• A definite shape and volume

• A definite shape but no definite volume

• No definite shape and no definite volume

Which state of matter has the least amount of Kinetic Energy

• Solid

• Liquid

• Gas

• Plasma