Chemistry definition of the atom/ finding protons , finding neutrons, or electrons in a Adam/ Using periodic trends, the types of nuclear decay/isotopes/ writing out alpha and beta decay reactions

Beginning of the year

What is an atom

An atom is something that is the smallest units of matter. It contains protons (positive charge) neutrons (0 charge) electrons (negative charge) the protons and neutrons are located in the nucleus of the atom

What is on the inside of the nucleus

Protons (positive charge)/ Nuetrons (negative charge)

How do you find the protons and electrons

The number of protons=atomic number (whole number on the periodic table) and the number of protons must be the same

Is the number of protons the same as the atomic number

Yes

What are isotopes?

isotopes are atoms of the same element that have different number neutrons

Some isotopes are stable and some are unstable. Isotopes decay at a known eate

how do you look at periodic trends?l

We go left to right and top to bottom

Atomic sizelicon

This is a size of an atom or ion. This decreases across a row and increases when you go up and down a group

Electronegative

This is the tendency of an element to attract electrons. This increases across a row and decreases down a group

Ionization energy

This is the amount of energy required for an atom to eject one of its electrons. This increases across a row and down a group

Down A group on the periodic table

Go from top to bottom

What is radioactive decay?

Radioactive decay is when an unstable isotope decayes into alpha/beta/gamma rays

What is fission

Fission is when a radioactive isotopes split apart into smaller components. A lot of energy then gamma is released

What is Fusion?

Fusion is when two hydrogen nuclei fuse together to create a helium nucleus. (A lot of energy and gamma rays are released)

Orbitals

Orbitals are clouds where electrons reside in an atom

Each orbital can hold up to maximum of 2 electrons

When you go down on the periodic table what happens to the atomic size

It increases

What is an element?

The simplist form of a substance

What is a an isotope

If the same number of protons and electrons but the number of neutrons ar different