Q: What is another term for scale worms? Choices: - trichina - wormidanopis - spirogyra - halkieria A:
halkieria

(Question)
Q: What do you call any device that makes work easier by changing a force? Choices: - technology - invention - battery - machine A:
(Answer)
machine

Ques: Q: Smog is a visible form of what? Choices: - condensation - water pollution - oxidation - air pollution A:
Ans: air pollution

(Q).
Q: The formula unit of sodium chloride dissociates into one sodium ion and one? Choices: - oxygen ion - magnesium ion - electron - chloride ion A:
(A).
chloride ion

Ques:Q: What is calculated by adding together the atomic masses of the elements in the substance, each multiplied by its subscript (written or implied) in the molecular formula? Choices: - mass effect - fractional mass - magnetic mass - molecular mass A:

Ans:molecular mass

Ques: Q: What branch of science is the study of the universe, not of cosmetics? Choices: - theology - astronomy - epistemology - cosmology A:
Ans:
cosmology