Topic One Vocabulary: Modeling Matter SAVAAS

The number of protons in the nucleus of an atom

• Atomic mass

• Atomic number

• Molecular weight

• Isotope number

Neutrally charged particles found in the nucleus of an atom

• Protons

• Electrons

• Neutrons

• Ions

Negatively charged particles found orbiting the nucleus of an atom

• Protons

• Neutrons

• Electrons

• Positrons

When two light weighted nuclei combine to form a singular, larger atomic structure. It releases a large amount of energy instantaneously and continues until all nuclei are gone.

• Nuclear Fusion

• Nuclear Fission

• Radioactive Decay

• Chemical Reaction

Different forms of the same element, neutron number is different but the atomic number is the same

• Isotopes

• Ions

• Allotropes

• Compounds

Positively charged particles found in the nucleus of an atom

• Neutrons

• Electrons

• Protons

• Photons

To present something as a hypothesis or an educated guess

• Hypothesize

• Theorize

• Speculate

• Postulate

An idea that the universe started from one tiny point that expanded and became all the matter and energy we have today

• Big Bang Theory

• Steady State Theory

• Cosmic Inflation Theory

• Multiverse Theory

The average mass of all the isotopes of an element

• Molecular Weight

• Atomic Mass

• Isotopic Abundance

• Mass Number

A form of matter that is made up of one type of atom

• Compound

• Mixture

• Element

• Solution