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Chapter 1: Q. 1.32 (page 22)

A "chemical-free" sunscreen includes the following ingredients: titanium dioxide, vitamin, and vitamin. Is the sunscreen truly "chemical-free"?1.1

Short Answer

Expert verified

The sunscreen is not truly "chemical-free".

Step by step solution

01

Given Information

We need to find the sunscreen is truly "chemical-free" or not.

02

Explanation

It can not be chemical-free, as all its ingredients - titanium dioxide, vitamin E, vitamin C - are essentially chemicals, which are substances composed of atoms and molecules.

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Most popular questions from this chapter

a. What is measured on the horizontal axis?

b. What is the range of value on the horizontal axis?

c. What is the temperature of the tea after 20min?

d. How many minutes were needed to reach a temperature of 45°C?

Whichnumberineachofthefollowingpairsissmaller?

a.4.9×10-3or5.5×10-9

b.1250or3.4×102

c.0.0000004or5.0×102

d.2.50×102or4×105

For each of the following, indicate if the answer has a positive or negative sign:1.4
a. Two negative numbers are added.
b. A positive and negative number are multiplied.

Evaluate each of the following:

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b.34+-55=___.

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Classifyeachofthefollowingasanobservation,ahypothesis,

an experiment, or a conclusion:(1.2)

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b. If I chop the log into smaller wood pieces, it will burn better.

c. The small wood pieces burn brighter and make a hotter fire.

d. The small wood pieces are used up faster than burning the big log.
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