Atomic Vocabulary

Vocabulary Assignment

Thurs. 11/29

4-Square Vocab

1. Write the vocabulary word on side A.
2. Draw a picture to help you remember the word on side A.
3. Write the definition on side B.
4. Write or draw a connection on side B. A connection is something that helps you remember the word.
5. NO QUIZLET THIS TIME!!!

Front Back

ALL WORDS DUE MONDAY! (This is graded!!!)

Part 1: The Atom (11)

• atom: the smallest component of an element having the same properties of the element
• nucleus: the central core of an atom containing protons and usually neutrons.
• proton: a small, positively charged particle in the nucleus of the atom.
• neutrons: a small particle in the nucleus of the atom, with no electrical charge.
• electrons: a tiny, negatively charged particle that moves around the nucleus of an atom.
• isotope: two or more elements that contains the same number of protons but different number of neutrons.
• ion: a charged atom, with more or less electrons than neutrons.
• atomic number: the number of protons in the nucleus of an atom.
• atomic mass: the average mass of one atom of an element.
• Bohr Model: a model of the atom which shows the energy levels or rings of an atom
• valence electrons: the electrons in the outermost electron level or orbital (highest energy level) of the electron.

Part 2: The Periodic Table (12)

• periodic table: a chart of the elements showing the repeating pattern of their properties.
• period: a horizontal row of elements in the periodic table.
• family/group: elements in the same vertical column of the periodic table.
• octet rule: atoms will readily bond with other atoms to have 8 electrons in the outer shell
• alkali metals: These metals are extremely reactive and are never found in nature in their pure form. They are silver colored and shiny. Their density is extremely low so that they are soft enough to be cut with a knife. (1 valence electron)
• alkaline earth metals:Slightly less reactive than alkali metals. They are silver colored and more dense than alkali metals. (2 valence electrons)
• transition metals: These metals have a moderate range of reactivity and a wide range of properties. In general, they are shiny and good conductors of heat and electricity. They also have higher densities and melting points than groups 1 & 2. (1 or 2 valence electrons)
• halogens: All nonmetals. Very reactive. Poor conductors of heat and electricity. Tend to form salts with metals. Never in uncombined form in nature. Ex. NaCl: sodium chloride also known as “table salt”. (7 valence electrons)
• noble gases: Unreactive nonmetals. All are colorless, odorless gases at room temperature. All found in earth’s atmosphere in small amounts. (8 valence electrons)
• metals: elements based on physical properties such as hardness, shininess, conductivity, malleability, and ductility
• metalloid: an element that has some of the characteristics of metals and some of the characteristics of nonmetals, semiconductors
• nonmetal: an element that is not hard, shiny, malleable or ductile

Some words are repeated terms from earlier this year!