Which Represents an Element

Q5: An atom or group of atoms which

Q6: Using a force to move a sample

Q7: Which is true of Antoine Lavoisier?<br>A)He developed

Q8: A pure substance is<br>A)any drug approved by

Q9: Which is true of alchemists?<br>A)They tried to

Q10: Greek philosophers were famous for their<br>A)advanced laboratories<br>B)ability

Q11: Which law states that the universe's entropy

Q12: The study of heat transfers and related

Q14: Which is a homogeneous mixture?<br>A)tap water<br>B)rocky road

Q15: Which represents a compound?<br>A)Ar<br>B)S₈<br>C)H₂O<br>D)none of these