Dalton Review

1. John Dalton was born in ?

Germany

France

USA

England

2. Dalton thought that matter was made up of small indivisible particles that we now call atoms.

True

False

3. Democritus of ancient Greece thought that small particles might make up everything around us. Why weren't his ideas accepted later on by scientists?

Democritus had no experimental evidence that we know of.

He later changed his mind.

He based his ideas on Greek mythology.

He stole his ideas from Aristotle.

4. Dalton's greatest contribution to chemistry was:

His theory of relativity

His theory of the atom

His theory of radioactivity

His theory of energy

5. Dalton theorized that when atoms combined with other atoms to form compounds, they did so in simple whole number ratios.

True

False

6. John Dalton made his contributions to science in the ?

Early 1700s

Early 1800s

Early 1900s

Early 1600s

7. Dalton theorized that when atoms of different elements were combined into compounds, the atoms sometimes were changed into new atoms.

True

False

Dalton wrote that atoms were NOT changed when they combined with other atoms to form compounds. This is still thought to be true today.

Explanation

Dalton wrote that atoms were NOT changed when they combined with other atoms to form compounds. This is still thought to be true today.

8. Dalton was able to determine the relative (not the actual) weights of many of the known atoms.

True

False

9. Dalton felt that atoms of the same element were almost identical but that there might be slight differences.

True

False

Dalton theorized that atoms of the same element were exactly identical. We now know this is not always true.

Explanation

Dalton theorized that atoms of the same element were exactly identical. We now know this is not always true.

10. Dalton also studied many other subjects during his life. Which of the following was NOT mentioned?

Meteorology

Color-blindness

Radioactivity

Grammar