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100
Which type of element is most likely to gain electrons when it forms bonds?
What is a nonmetal?
100
bond that forms when atoms share one or more pairs of electrons
What is covalent bond?
100
a shorthand notation that represents a compound or diatomic molecule is called
What is a chemical formula
100
the bond formed by the attraction between + charged metal ions and the electrons around them is a
What is metallic bond?
100
For electrons to pull away from atoms, _________ is needed
What is energy?
200
Because ions in metals can be easily arranged without breaking the metallic bonds, metals tend to be easily
What is reshaped?
200
smallest unit of a substance that keeps the properties of an atom
What is molecule?
200
When atoms gain or lose electrons, charged particles called ___________ are formed?
What is ions?
200
The number of protons in an atom is its
What is atomic number?
200
When atoms lose electrons in an ionic bond, they become ________ charged.
What is (+)? positive
300
Which of the following names a covalent compound?
What is dinitrogen dioxide?
300
molecules made of two atoms of the same element
What is diatomic molecule?
300
An interaction that holds two atoms together is called a ______________
What is a chemical bond?
300
atoms in the same ____________ have the same number of valence electrons
What is group?
300
An atom will not normally form a bond if it already has _________ valence electrons.
What is 8?
400
What does a prefix in a chemical formula tell you about an element?
What is the number of elements
400
bond formed by the attraction between positively charged ions and the electrons around them
What is metallic bonds
400
an electron in the outer most shell
What is a valence electron?
400
An electron in the outermost level of an atom is a
What is valence electron?
400
The number that cannot change to balance a chemical equation is the
What is subscript?
500
Which phrase describes what happens to atoms in a chemical reaction?
What is NEVER lost or gained, just rearranged?
500
ability of metal to be hammered into sheets
What is malleability
500
Neutral atoms covalently bonded together form a _______.
What is a covalent bond?
500
If a sodium atom loses its only valence electron, it becomes an _______.
What is ion?
500
What is put in front of a chemical formula to balance an equation?
What is a coefficient?