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PT2
"Element"ary My Dear
We've got Chemistry
Chemistry Cat
Counting Atoms
100
The group of elements that share characteristics with metals and nonmetals
What are metalloids?
100
"Opposites attract" would best describe __________ bonding.
What is ionic?
100
The 3 types of bonding
What are covalent, ionic, and metallic?
100
The only metal that is liquid at room temperature
What is mercury?
100
Elements are written in a scientific shorthand called _____________ _____________ which consists of 1-2 letters.
What is chemical symbol?
200
The most common element on Earth
What is iron?
200
A ____________ bond forms between metal atoms when their outermost energy levels overlap.
What is metallic?
200
The _______________ tells the number of units of each substance.
What is coefficient?
200
The ______________ tells the number of atoms in a molecule of a particular element.
What is subscript?
200
How many valence electrons are in O?
What is 6?
300
Elements in the same group on the periodic table have the same number of _________ electrons.
What is valence?
300
The most abundant element
What is hydrogen?
300
The most reactive element
What is fluorine?
300
The most toxic element
What is thallium?
300
The _____________ tells the negative or positive charge and the number of electrons lost/gained.
What is superscript?
400
Group ______ is the most reactive, while Group _____ is stable and nonreactive.
What are Group 1 and Group 18?
400
Describe how covalent bonds form.
What is two atoms share valence electrons to fill their outer shell?
400
Tell whether electrons were lost or gained and how many in the following: N2-
What is gained and 2?
400
A group/family on the periodic table has similar ____________ and _________________ properties.
What are physical and chemical?
400
Si is in Group 14. How many valence electrons does it have?
What is 4?
500
Draw the Lewis Structure for CO2.
Teacher will verify answer.
500
List 3 physical properties of covalent bonds.
What are: not soluble in water, poor electrical conductor, low melting and boiling points, softer (malleable), and more flammable?
500
Describe how ionic bonds form.
What is when atoms bond together by gaining or losing electrons - negative and positive charges attract to each other?
500
List 4 physical properties of ionic bonds.
What are: high melting and boiling points, water solubility, electrical conductivity, brittle, crystal lattice structure, and less flammable?
500
How many atoms are in the following chemical formula - 2CO2 + H2Cl2
What is 10?