(Question)
Q: What do all chemical reactions need to get started? Choices: - expression energy - kinetic energy - potential energy - activation energy A:
(Answer)
activation energy

(Question)
Q: What method is used to map the earth on flat paper? Choices: - calculations - forecasts - surveying - projections A:
(Answer)
projections

(Question)
Q: The rate of a reaction can be expressed either in terms of the decrease in the amount of what or the increase in the amount of a product per unit time? Choices: - plasma - sulfate - isotope - reactant A:
(Answer)
reactant