8th Grade Chemical Bonding And Reactions Quiz. Question Preview (ID: 22345)
This Is A Test Of Your Knowledge On Chemical Reactions And Chemical Equations.
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During a chemical reaction
a) matter CAN be lost during chemical reactions.
b) the mass of the products is greater than the mass of the reactants.
c) the mass of the reactants is greater than the mass of the products.
d) the mass of the reactants and the mass of the products are equal to each other.
The Law of Conservation of Matter states that
a) matter can be lost during a chemical reaction.
b) matter can neither be created or destroyed during a chemical reaction.
c) mass changes as chemical reactions occur.
d) chemical reactions can cause a loss of mass.
The two different types of chemical bonds are
a) polar and non polar bonds
b) anions and cations bonds
c) valent and covalent bonds
d) ionic and covalent bonds
This type of chemical bond occurs when an electron is gained or lost by an atom of an element.
a) ionic
b) covalent
c) valent
d) cation
This type of chemical bond occurs when electrons are shared by atoms of at least two different elements on the valence level.
a) ionic
b) covalent
c) valent
d) cation
Which family of elements are the most stable?
a) Alkali Metals
b) Metalloids
c) Halogens
d) Noble Gases
As you move down a column from top to bottom in the periodic table, one trend that is consistent is that atoms get
a) larger
b) more reactive
c) less stable
d) larger, more reactive, and less stable
If an atom has 8 electrons in the valence electron level, that atom is
a) unstable.
b) an isotope of another atom.
c) likely to bond with other atoms.
d) least likely to bond with other atoms.
In the following chemical equation, which are the reactants? 2H2 + O2 yields 2H2O
a) The reactants are found before the word yields.
b) The reactants are found after the word yields.
c) There are only products in this equation.
d) Both sides of the word yields are reactants.
6CO2 + 6H2O yields C6H12O6 +6O2 is an example of
a) a chemical formula that demonstrates a chemical equation.
b) a chemical equation that demonstrates a chemical reaction.
c) a molecule of water bonding with carbon dioxide.
d) an unbalanced chemical equation.
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