Classify the following as a physical or chemical change: You combine two clear liquids and they turn cloudy white.
Chemical change
5
Which of these is used as a food preservative? a) Beryllium b) Natural gas c) Sulfur dioxide d) Bromine
c) Sulfur dioxide
5
A light ray has an angle of incidence of 34. The reflected ray will make what angle with the reflecting surface? a) 0 b) 34 c) 56 d) 66
c) 56
5
Light that travels into the eye passes through several parts to get to the retina. Please order the parts that the light reaches first to last. Cornea, vitreous humour, lens, pupils
Cornea, pupil, lens, virtreous humour
5
Which of the following is not a unit for power? a) Joule-second b) Watt c) Newton-meter per second d) Horsepower
