Cumulative Exam — Cumulative exam

Question 1

Which ingredient would a company that makes super-sour candy most likely use in large quantities?

Revolt · Accepted Answer

citric acid

Question 2

Which statement best describes one positive and one negative way that society was impacted by the use of DDT?

Revolt · Accepted Answer

Society was positively impacted by increased insect control in crops, but it was negatively impacted by harmful chemicals.

Question 3

This table shows the pH values of different solutions.

Revolt · Accepted Answer

Y Z X W

Question 4

A researcher is using a particle accelerator in an experiment studying isotopes. How can the researcher change one isotope into a different isotope of the same element?

Revolt · Accepted Answer

by adding or removing neutrons

Question 5

At the center, 6 unmarked red balls are interspersed with 4 blue balls marked with plus signs. A green cloud with 2 concentric white lines surrounds the center, with 2 small green balls marked with minus signs on the inner white line and 2 small green balls marked with minus signs on the outer white line.

Revolt · Accepted Answer

6

Question 6

Which best compares and contrasts how John Newlands and Dmitri Mendeleev organized elements?

Revolt · Accepted Answer

Both Newlands and Mendeleev arranged elements according to their atomic masses, but only Mendeleev used chemical properties as well.

Question 7

When a hammer strikes a compound formed by covalent bonds, what will most likely happen to the compound?

Revolt · Accepted Answer

It will break into many pieces.

Question 8

This is how platinum appears in the periodic table.

Revolt · Accepted Answer

195

Question 9

Which best describes a semiconductor?

Revolt · Accepted Answer

Semiconductors are more conductive than a nonmetal and less conductive than a metal.

Question 10

This chart lists four elements from the periodic table.Atoms from which two elements would form ionic bonds?

Revolt · Accepted Answer

iodine and calcium

Cumulative Exam — Cumulative exam Answers

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