Intro to Chemistry

Question 1

Define Chemistry

Answer 1

The science of how 3 particles, the proton, neutron and electron, came together in various combinations to make….everything!

Question 2

Define Theory (noun)

Answer 2

A well-tested set of ideas that explains many disparate observations

Question 3

What did Einstein prove in 1905?

Answer 3

Einstein mathematically proved the existence of atoms in 1905

Question 4

What is the Greek word for indivisible

Answer 4

Atom

Question 5

The number of protons in an atom determines what?

Answer 5

The number of protons in an atom determines what element the atom is and it’s atomic number on the periodic table

Question 6

Why is the chemical symbol for silver Ag?

Answer 6

The chemical symbol for silver is Ag because when it was named silver was called Argentum which is latin for shiny, grey stuff

Question 7

What is unique about the title Argentina?

Answer 7

Argentina was named such beacause Spanish explorers had heard rumours of mountains made of silver in that area. As silver was then called Argentum the name Argentina was implemented and still is used today

Question 8

What force holds a nucleus together?

Answer 8

Strong Nuclear Force

Question 9

What can change the relative atomic mass of an element?

Answer 9

Relative atomic mass changes with a change in the amount of neutrons in an atom. The Atomic Number (number of protons) does not change.

Question 10

Define Relative Atomic Mass

Answer 10

Relative Atomic Mass is the number of protons and neutrons averaged across all of that element on earth.

Question 11

Define Isotopes

Answer 11

Isotope (noun)
Iso - Same Tope - Place
Atoms of the same element with different amounts of neutrons or relative atomic mass. Ie C-12 C-14

Question 12

What are Nucleons?

Answer 12

Sub-atomic particles which reside in the nucleus. Protons and Neutrons

Question 13

What do neutrons do in the nucleus?

Answer 13

Neutrons act as a buffer between protons in the nucleus to stabilise the nucleus.