A pure substance is made up of several types of atoms

true or false

A triacylglycerol is composed of 3 glycerol molecules joined to a fatty acid. a. True b. False

If a substance changes color, what has most likely happened? A pressurized change has taken place. A.) A chemical change has taken place. B.) A physical change has taken place. C.) Nothing has taken place.

What is weathering? A. the dropping of sediment B. the moving of sediment C. the breaking down of rock D. the building up of landforms

In a biological reaction involving and enzyme the substrate binds to A. The active site of an enzyme B. the active of another substrate C. The inactive site of an enzyme D. The inactive site of another substrate

Which change will create a more dilute solution? increasing the amount of solute evaporating some of the solvent increasing the amount of solvent increasing the volume of the solution

Which of the following is a characteristic of nonmetals? a. nonmetals are often shiny and hard. b. nonmetals are often malleable. c. Nonmetals do not conduct electricity. d. nonmetals are often ductile.

How does a change in temperature affect the kinetic energy of the particles in a reaction?

Which characteristic best identifies an Arrhenius base

Which statement correctly describes why a compound is a pure substance? O A compound is not a pure substance because each of its molecules is m elements A compound is a pure substance because its molecule cannot be broken O A compound is not a pure

What negative impact did chemistry have on society through the production and use of chlorofluorocarbons?