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Chapter 1: Q. 1.15 (page 16)
What is the place value for the bold digit?
a.
b.
c.
a. The place value of the bold digit is thousandths.
b. The place value of the bold digit is oneth.
c. The place value of the bold digit is hundredths.
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A student in your class asks you for advice on learning chemistry. Which of the following might you suggest?
a. studying different topics at the same time
b. not reading the text; it's never on the test
c. attending review sessions
d. working on the problems again after a few days
e. keeping a problem notebook.
Identify each of the following as an observation, a hypothesis, an experiment, or a conclusion:
a. One hour after drinking a glass of regular milk, Jim experienced stomach cramps.
b. Jim thinks he may be lactose intolerant.
c. Jim drinks a glass of lactose-free milk and does not have any stomach cramps.
d. Jim drinks a glass of regular milk to which he has added lactase, an enzyme that breaks down lactose, and has no stomach cramps.
A "chemical-free" sunscreen includes the following ingredients: titanium dioxide, vitamin, and vitamin. Is the sunscreen truly "chemical-free"?
a. What does the title indicate about the graph?
b. What is measured on the vertical axis?
c. What is the range of values on the vertical axis?
d. Does the temperature increase or decrease with an increase in time?
A student in your class asks you for advice on learning chemistry. Which of the following might you suggest?
a. forming a study group
b. skipping class
c. asking yourself questions while reading the text
d. waiting until the night before an exam to study
e. answering the Engage questions
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