Which of the following demonstrates the role of chemistry in getting ready for school in the morning?
A. Soap cleans dirt and grease from your skin.
B. Hot and cold water can be mixed together to make warm water.
C. A hairdryer blows hot air when it is turned on.
D. A mirror reflects light in a way that allows you to see your
reflection

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

Displacement is the slope of a velocity vs. time graph a. true b. false