D. Subatomic Particle & the Nuclear Atom 1.Nucleus contains positively charged protons and neutral...

D. Subatomic Particle & the Nuclear Atom

1. Nucleuscontains positively charged protons and neutral neutrons

VERY dense! If a nucleus were the size of the dot in the exclamation point at the end of this sentence, its mass would be approximately as much as that of 70 automobiles!

2. Protons (discovered by Rutherford)

Carries a charge of 1+, equal but opposite that of an electron

Mass = 1.6726x10-24 g (1800x’s more than electron)

Referred to as atomic number

Found in nucleus

Atomic number = number of protons = number of electrons

3. Neutrons (discovered by Chadwick)

No Charge

Mass = 1.6750x10-24 g

Found in nucleus

Number of neutrons = mass number – atomic number

4. Electrons (discovered by Thomson)

Negative charge (1-)

Relative mass is 1/1840 amu (actual mass is 9.115x10-28 g).

Located in the space surrounding the nucleus

number of protons = number of electrons

What is not neutral?

What is a charged atom called? ion

Sodium? Protons?

Na = 11 protons

(+11) + (-10) = +1 charge

Na 1 +

What if it has 10 electrons?

5. Atomic number

Refers to the number of protons

Determines the elements position on the periodic table

All atoms of a particular element have the same number of protons and electrons, but neutrons may differ these types of elements are called Isotopes.

6. Isotopes and Mass Number

The sum of the number of protons and neutron is the Mass Number.

Mass number = protons + neutrons

The atomic mass of an element is the weighted average mass of the isotopes of that element.

H = 1 amu

Relative masses, assigned by Dalton

O = 16 amu

Mass #

Atomic #

19 K39

19 K40

19 K41

Neutrons? 21 22

93.25% = ?g 5.73025% = ?g 0.127% = ?g

Abundance of isotope?

93.25% = ?g 36.3675 g

5.73025% = ?g

2.2921g 0.127% = ?g .05207g

36.3675 g + 2.67873g + .05207g =

39 40 41

D. Subatomic Particle & the Nuclear Atom 1.Nucleus contains positively charged protons and neutral...

Documents

Transcript of D. Subatomic Particle & the Nuclear Atom 1.Nucleus contains positively charged protons and neutral...

Atoms are made up of three types of smaller particles, namely protons, neutrons and electrons. These particles are known as subatomic particles. SUBATOMIC.

Basic Chemistry & Chemical Bonds. Subatomic Particles Proton (+) Electron (-) Neutron (n) Nucleus of an atom contains protons and neutrons Electrons orbit.

Atoms: Building Blocks of Matter. Structure of an Atom Subatomic particles: 3 particles that make up an atom (protons, neutrons, e ee electrons) –N–Nucleus:

1 - 1 - 1.01 Subatomic Particles_ Protons, Neutrons, Electrons and the Nucleus 21_51

Electrostatics (Static Electricity) Subatomic Particles ProtonNeutronElectron In nucleus Tightly Bound Positive Charge In nucleus Tightly Bound No Charge.

The nucleus is made up of protons (p + ) and neutrons (n o ) and is surrounded by rings of orbiting electrons (e - ) Subatomic particle Relative massRelative.

The Strong Force Why do protons & protons, protons & neutrons, and neutrons & neutrons all bind together in the nucleus of an atom? Electromagnetic?

Subatomic Particles: Electrons, Protons, and Neutrons · 2018-10-29 · Subatomic Particles: Electrons, Protons, and Neutrons ... Subatomic particle in the nucleus that is neutral

Atomic Structure Notes. 2 Atomic Structure Subatomic particles include ________, _________ and _________. protons neutrons electrons ________ and _________.

There are three subatomic particles which make up the atom: Protons Electrons Neutrons.

Unstable Nuclei & Radioactive Decay Radioactivity Nucleus of an element spontaneously emits subatomic particles & electromagnetic waves. Nucleus of an.

Protons + Neutrons = Nucleus Electrons “orbit” at various distances from nucleus

Nuclear chemistry. Subatomic Particles Protons- plus charge In the nucleus Neutrons- neutral Electrons - negative charge Outside the nucleus.

Radiation What makes something radioactive? The nucleus of an atom contains protons and neutrons The nucleus of an atom contains protons and neutrons.

Bellwork9.12.2011 1.Draw a picture of an atom. Label the nucleus, protons, neutrons, and electrons. 2.Give the charges of each of the 3 subatomic particles.

Subatomic particleChargeLocation proton +nucleus neutron nonenucleus electron - surrounds nucleus Atomic number (#)= number of protons (=number of electrons.

Protons and neutrons (nucleons) - MSJChem...Protons and neutrons (nucleons) are located in the nucleus of the atom. Electrons are located in energy levels surrounding the nucleus.

Inside the nucleus there are: Protons Neutrons The nucleus is held together by the strong nucleus force.

BELL RINGER What subatomic particle is not located in the nucleus?

CHEMISTRY 161 Chapter 3. 1. Structure of an Atom subatomic particles electrons (‘cloud’) protons (nucleus) neutrons (nucleus) m(n) / m(e) ≈ 2000m(n) >

Atomic Structure Notes. 2 Atomic Structure Subatomic particles include ____, _ and _. protons neutrons electrons and _____.