Physical Science ch 4 pt 1

1. Explain the difference between a neutron and a nucleus.

A neutron is a partical that is part of the nucleus, but the nucleus consists of neutrons and protons

2. An atom contains equal numbers of protons and electrons.

3. Which has no charge?
a. electrons
b. protons
c. neutrons
d. nucleus

C.

4. Name the particles that make up an atom and tell where they are located.

Neutron, proton, electron. The neutrons and protons are located in the nucleus, and the electrons are located in the space outside of the nucleus.

5. Explain in your own words what is meant by the law of definite proportions.

The Law of Definite Proportions means that any amount of a pure compound will be made of proportional amounts of the same elements as any other pure amount of that compound.

6. Describe how Lavoisier was able to demonstrate the law of conservation of mass.

By conducting experiments in closed environments and noting the starting and ending mass.

7. Show that the ratio of the number of atoms of hydrogen to the number of atoms of oxygen in the compound of water is 2 to 1.

The number of atoms of hydrogen to the number of atoms of oxygen in water is shown by the scientific name for water, H2O, with the “H” meaning hydrogen, the “2” meaning 2 (in reference to the hydrogen), and the “O” meaning oxygen, additionally, you could preform electrolysis on it and measure the gasses you get.

8. Compare the mass and the volume of a proton with the mass and volume of an electron.

A proton is 1.007316 AMU, while a electron is 0.000549 AMU. This makes a proton roughly 1800 times heavier than a electron.

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