Ques: Q: Hydrogen gas is generated by the reaction of nitric acid and what else? Choices: - gaseous iron - martian iron - carbon - elemental iron A:
Ans: elemental iron

Ques: Q: What happens to the volume of a gas as the kelvin temperature increases? Choices: - it decreases - it drops - it continues - it increases A:
Ans: it increases

Ques: Q: Change in what equals the average net external force multiplied by the time this force acts? Choices: - lag - height - rate - momentum A:
Ans: momentum

Ques: Q: What branch of physical science looks at how heat, work, and various forms of energy are related to one another? Choices: - photosynthesis - frigidity - transformations - thermodynamics A:
Ans:
thermodynamics