(Question)
Q: Steel, bronze, and brass are good examples of what? Choices: - metalloids - elements - salts - alloys A:
(Answer)
alloys

(Question)
Q: In scientific terms, average acceleration is the rate at which what changes? Choices: - direction - volume - gravity - velocity A:
(Answer)
velocity

(Question)
Q: Which form of digestion is a purely physical process that does not change the chemical nature of the food? Choices: - slow - simple - electromagnetic - mechanical A:
(Answer)
mechanical