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Chapter 1: Q.1.1 (page 3)

Write one sentence definition for each of the following:

a. Chemistry

b. Chemicals

Short Answer

Expert verified

a. Chemistry is the detail of the composition, structures, properties, and reactions of substances.

b. A chemical is a species that has the same composition and properties.

Step by step solution

01

Part (a) Given Information

Definition of chemistry

02

Part (a) Explanation

Chemistry is the detail of the composition, structures, properties, and reactions of substances. The matter is another word for all the substances that make up our world.

Chemistry happens in our day-to-day life and in everything one does.

Example: One is doing chemistry when they cook food, add bleach to their laundry, or start their car.

03

Part (b) Given Information

Definition of Chemicals

04

Part (b) Explanation

A chemical is a species that has the same composition and properties. Whatever a person sees is made up of chemicals.

Chemical processes can take place in:

  • Chemical laboratories
  • Human bodies
  • Plants
  • Manufacturing laboratories

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Most popular questions from this chapter

Classifyeachofthefollowingasanobservation,ahypothesis,

an experiment, or a conclusion:(1.2)

a. A big log in the fire does not burn well.

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.

Solve each of the following for b:

a.2b+7=b+10.

b.3b-4=24-b.

Identify each activity, a to f, as an observation, a hypothesis, an experiment, or a conclusion. At a popular restaurant, where Chang is the head chef, the following occurred:

a. Chang determined that Customers rated the sesame sales of the house salad seed dressing as the best. had dropped.

b. Chang decided that the house salad needed a new dressing.

c. In a taste test, Chang prepared four bowls of lettuce, each with a new dressing: sesame seed, olive oil, balsamic vinegar, creamy Italian, and blue cheese.

d. Tasters rated the sesame seed salad dressing as the favorite.

e. After two weeks, Chang noted that the orders for the house salad with the new sesame seed dressing had doubled.

f. Chang decided that the sesame seed dressing improved the sales of the house salad because the sesame seed dressing enhanced the taste.

What is the place value for the bold digit?

a.7.3288

b. 16.1234

c.4675.99

Select the correct phrase(s) to complete the following statement: A hypothesis is confirmed when: (1.2)

a. one experiment proves the hypothesis

b. many experiments validate the hypothesis

c. you think your hypothesis is correct
See all solutions

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