What do scientists and engineers have in common? A. They don't need to be creative.
B. Their work always has a goal of solving a practical problem.
C. They always work in laboratories or offices.
D. They need to observe, measure, calculate, and record and interpret results.

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Compare and contrast physical changes with chemical changes.

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88