Navigating the Periodic Table
What family (vertical rows) do the Noble Gases belong to?
Vertical row 18
What atoms are in the Alkali Metals column?
Hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium.
What did Ernest Rutherford do/discover? (name at least 1 thing)
He discovered the nucleus - the tiny, dense, positively charged center of the atom. He also proposed that there were two kind of particles inside the nucleus, protons and neutrons.
Atomic mass of Ununquadium
289
What does the nucleus contain?
Protons and Neutrons
An atom has 21 protons, what is it's name and atomic mass?
Scandium - 45.0
What does the Alkali Metal group do?
A) A chemical that can dissolve in water, combine with acids to form salts, and make acids less acidic
B) Al-kuh-ly, they're oxides and hydroxides are alkaline in nature and these metal oxides are found in the earth's crust.
A) A chemical that can dissolve in water, combine with acids to form salts, and make acids less acidic
The second answer is for Alkaline-Earth Metals
What did J. J. Thompson do/discover? (name at least one thing)
He studied electric currents and discovered that currents are streams of negatively charged particles. He reasoned that all atoms must contain these negative particles.
What are the horizontal rows called? What are the vertical columns called?
The horizontal rows are the family and the vertical columns are the groups
Atoms are composed of which subatomic particles?
Protons (+), Neutrons and Electrons (-)
There is an atom with the atomic number of 77 what is its chemical name?
Iridium
Which Alkali metal reacts most to water?
Francium
1. All matter is made of small particles called atoms.
2. Atoms cannot be created, destroyed, or divided into smaller pieces.
3. All atoms of the same element are identical in mass and size.
4. Compounds are created when atoms of different elements link together.
Find the number of Neutrons of the atom Meitnerium.
Mass #: 278
Protons: 109
157
What are protons?
They're positive. The number of protons is equal to the atomic number on the periodic table. The number of protons can NEVER EVER EVER EVER change. Ever.
How many shells does Gallium have?
Is it happy?
3 shells.
No, it's not happy.
What's the family of the Alkali Metals?
Vertical row 1
What did John Dalton do/discover? (name at least 1 thing)
In the early 1800's he started to look at the earths atmosphere, he looked at oxygen, carbon dioxide and nitrogen oxide. He proposed that the tiniest particles were atoms.
How many elements are there in the periodic table?
118
What are neutrons?
They're neutral. Neutrons are heavy and add mass to the nucleus. Usually the number of them is close the the number of protons. The number of neutrons can change, this can change the element a bit, for example, Carbon-12 has a different number of neutrons than Carbon-14.
Name the atom with 66 protons along with its chemical symbol.
Dy - Dysporosium
Characteristics of the Alkali Metals (name at least 3)
Alkali Metals are soft, shiny, highly reactive with water and oxygen, stored in non-reactive liquids
What did Niels Bohr do/discover? (name at least 1 thing)
In the early 1900's he studied the electrons surrounding the nucleus. He proposed that electrons surround the nucleus in specific energy "levels", this meant that each electron has a specific amount of energy.
What is the only liquid metal at room temperature?
Mercury
What are electrons?
They're negative. Electrons surround the nucleus in specific energy levels. An equal number of protons and electrons means that the atom is neutral.