Q: Q: Which temperatures cause particles of reactants to have more energy? Read this paragraph and choose the correct option from the provided answers: When the temperature of reactants is higher, the rate of the reaction is faster. At higher temperatures, particles of reactants have more energy, so they move faster. They are more likely to bump into one another and to collide with greater force. For example, when you fry an egg, turning up the heat causes the egg to cook faster. The same principle explains why storing food in a cold refrigerator reduces the rate at which food spoils (see Figure below ). Both food frying and food spoiling are chemical reactions that happen faster at higher temperatures. Choices: - non-existant - reducing - lower - higher A:
A: higher

Q: Q: Scientists search for answers to questions and solutions to problems by using a procedure called this? Read this paragraph and choose the correct option from the provided answers: Scientists search for answers to questions and solutions to problems by using a procedure called the scientific method. This procedure consists of makingobservations, formulating hypotheses, and designing experiments, which in turn lead to additional observations, hypotheses, and experiments in repeated cycles (Figure 1.4 "The Scientific Method"). Choices: - measured method - continued method - careful method - scientific method A:
A: scientific method

Q: Q: The four phases of mitosis are prophase, metaphase, anaphase and what? Read this paragraph and choose the correct option from the provided answers: Mitosis occurs in four phases, called prophase, metaphase, anaphase, and telophase. Choices: - spirogyra - postphase - trichina - telophase A:
A: telophase

Q: Q: What are the gas giants mostly made of . Read this paragraph and choose the correct option from the provided answers: The gas giants are mostly made of hydrogen and helium. These are the same elements that make up most of the Sun. Astronomers think that most of the nebula was hydrogen and helium. The inner planets lost these very light gases. Their gravity was too low to keep them and they floated away into space. The Sun and the outer planets had enough gravity to keep the hydrogen and helium. Choices: - calcium and helium - nitrogen and helium - hydrogen and carbon - hydrogen and helium A:
A: hydrogen and helium