#19- Table sugar and table salt are examples of

#20- Which of the following is NOT an example of a chemical change?

#21- Lemonade consists of several substances that are NOT chemically combined, so lemonade is classified as a(n)

#22- In general, which of the following statements about metals is true?

The period number is also the same number as the

#24- The elements that do not ordinarily form compounds are

Synthetic elements are

the name of the group of elements along the stair shape part of the Periodic Table are

The periodic table is set up according to

Why do some of the symbols not match the name of elements on the Periodic Table of Elements?

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