3. Firefighters' uniform is coated with a plastic that is fire resistant. Identify the plastic from the given

options.

a. Teflon

b. Melamine

c. PET

d. Polyester

Photons travel outward from a light bulb in a. a single straight line. b. all directions. c. increasing intensity. d. a small, dense area

Describe the real world examples of newtons third law

Copper sulphate is used during laboratory preparation of hydrogen gas. Give reason.

Which of the following correctly describes a Brønsted-Lowry base? A. It accepts protons. B. It donates protons. C. It produces OH - ions in solution. D. It donates an electron pair.

Which statement about enzymes is true? a) They are large molecules that decrease the rate of reactions in the body. b) They are large molecules that increase the rate of biologically important reactions. c) They slow the rate of chemical reactions.

Which substance, when dissolved in water, forms a solution that conducts an electric current

Room has a dimension of 10ft x 20 ft x 8 ft. What is the volume of the room in cubic yards if 1 yard = 3ft

Which of the following best describes a mixture in which ionic compounds are dissociated in solution? a. ion solution b. aqueous solution c. hydraulic solution d. hydrochloric solution

An iceberg has a volume of 8925 ft3. is the mass in kilograms of the iceberg?

Which of the following is responsible for the cohesive property of water? A. Covalent bonds between the hydrogen atoms of two adjacent water molecules B.