Q: How is communication initiated and maintained with spacecraft? Choices: - sonar - telegraph - wi-fi - radio waves A:
radio waves

(Question)
Q: The energy a chemical reaction needs to get started is called what kind of energy? Choices: - function - conduction - fusion - activation A:
(Answer)
activation

Ques: Q: The motion of molecules in a gas is random in magnitude and direction for individual molecules, but a gas of many molecules has a predictable distribution of what, which is called the maxwell-boltzmann distribution? Choices: - molecular size - molecular rate - molecular shape - molecular speeds A:
Ans: molecular speeds

(Q).
Q: Having polar bonds may make a covalent compound what? Choices: - ionic - negatively charged - neutral - polar A:
(A).
polar

Ques:Q: What helps determine the concentration of a species in a solution? Choices: - technical analysis - qualitative analysis - fundamental analysis - quantitative analysis A:

Ans:quantitative analysis

Ques: Q: Like a runner passing a baton, the transmission of nerve impulses between neurons depends on what? Choices: - enzymes - axons - receptors - neurotransmitters A:
Ans:
neurotransmitters