Periodic Table
Atoms
Elements
Compounds
Bonding
100
A number on the periodic table that indicates the number of protons in an atom.
The atomic number
100
What scientists create to describe atoms because they are so small.
Models
100
The simplest pure substances that cannot be broken down into other substances.
Elements
100
The electrical charge of Ionic compounds.
Neutral
100
The electrons that are involved in bonding between atoms.
Valence electrons
200
What you can predict from an element's location in the periodic table.
Its chemical properties
200
The electrical charge of an ion when the atom loses an electron.
Positive
200
The type of element that shares characteristics with both metals and nonmetals.
Metalloids
200
The ion written first in the chemical formula for an ionic compound.
Positive ion
200
The type of bond formed in a covalent bond when electrons are shared unequally.
Polar bond
300
The elements in a ______________ of the periodic table have properties that change in a pattern.
Period / Row
300
The maximum number of valence electrons an atom can have.
8
300
The elements that are gases at room temperature.
Nonmetals / Noble Gases
300
Na2S is the chemical formula for which compound?
Sodium Sulfide
300
The type of bond when two pairs of electrons are shared between two atoms.
Double bond
400
Elements with similar properties are located in the same ______________ of the periodic table.
Family / Group
400
Two parts of the atom that are located in the nucleus.
Protons & Neutrons
400
The smallest particle of an element.
Atom
400
When can an Ionic compound conduct electricity?
When dissolved in water
400
The type of bond that is formed between oppositely charged ions.
Ionic bond
500
How did Mendeleev first arrange elements on the first periodic table?
Increasing atomic mass
500
The number of atoms in a Polyatomic ion.
More than 1
500
The state of most metals at room temperature.
Solid
500
The group which does not ordinarily form compounds.
Noble Gases
500
The chemical bond between 2 nonmetal atoms which share valence electrons.
Covalent bond
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