Unit One
What is an isotope defined by
By its mass number
What energy level is closest to the nucleus
The first level
What do elements in group one have in common
They are very reactive
An example of a covalent compound
H20
What does react with acids
Aluminum, zinc, and Iron do
What are isotopes
Atoms with the same number of protons and different numbers of neutrons are called isotopes
How much electrons can the second level hold
Up to 8
True/False are Noble gases reactive
No False
What type of bond is formed between a metal and nonmetal
Ionic
What does not react with acids generally
Platinum and Gold
Thomson discovered what
That atoms contain negatively charged particles
How are the elements organized
By increasing atomic number
How does the number increase
From left to right
What is an ionic bond
A type of chemical bond that forms between two atoms
What does Hydrochloric acid in the Human body
It breaks down and digest your food
What is a sea squirt made up of
Nanowhiskers
How are elements classified
By nonmetals,metals, or metalloids.
What are the least reactive
Noble gases
What is a covalent bond
When atoms share one or more pairs of valence electrons to achieve a stable electron
Where are Folic acids found
In green leafy vegetables.
What does the word Atomos mean
Uncuttable
What are most elements
metals
What is the only group that an element doesn't end with 8 valence elecrtons
Group 1
Why are some ions known as polyatomic ions?
Ions that are composed of two or more atoms bonded together
What is the chemical reaction of a Hydrangea
The soil give it a chemical reaction which changes the color