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Chemical
Physical
Reactions
Equations
Its a Balancing Act
100
the ability or inability of a substance to combine with or change into one or more substances.
What is a chemical property?
100
The change of one or more substances into other substances.
What is a chemical change?
100
True of False Changes of state are easily reversed.
What is True
100
the strting materials in a chemical reaction.
What are reactants?
100
this number tells you how many atoms of an element there are in a molecule.
What is a subscript?
200
Which of the following is a physical property of Fe? A. Rust B. Magnetism C. Brittle
What is B. Magnetism
200
any property that can be observed without changing the identity of the substance.
What is a physical property?
200
a process in which substances are mixed evenly with one another.
What is dissolving?
200
the new substances formed in a chemical reaction
What are products?
200
this number tells you how many atoms, molecules or formula units take part in a reaction
What is a coefficient?
300
Which of the following is a chemical property of Fe? A. Rust B. Magnetism C. Malleability
What is A. Rust
300
True or False. A chemical change cannot be reversed.
What is True. Example- burnt paper cannot be unburnt.
300
State the Law of Conservation of Mass
What is "The total mass before a chemical reaction is the same as the total mass after the chemical reaction."
300
In a chemical equation, the plus sign (+) is read as_________
What is reacts with
300
Which substances are the reactants is the following equation, NaOH +HCl >NaCl +H2O
What are NaOH and HCl Sodium, Oxygen, Hydrogen and Hydrogen and Clorine
400
Which substance has the chemical property of flammability? A. Silver B. Hydrogen C. Carbon dioxide
What is B. Hydrogen
400
Which of the following has the physical property of boiling at 100* C? A. Au B. Hg C. H20
What is C. H2O, water
400
a molecule that contains two atoms.
What is a diatomic molecule?
400
In a chemical equation, the arrow ( > ) is read as _______
What is "produces"
400
Balance this equation Ag + H2S > Ag2S +H2 Numbers are all subscripts. Add the coefficients!
What is 2Ag + H2S > Ag2S + H2
500
True or False A chemical property can also describe the conditions under which a substance will not change identity.
What is True. Example- Gold will not corrode.
500
Which of the following has the physical property of a melting point of 801* C? A. Ag B. Au C. NaCl
What is C. NaCl table salt
500
the father of modern chemistry
Who is Antoine Lavoisier?
500
Fluorine is a diatomic molecule and is written _________
What is F2
500
Balance the following Al2O3 > Al +O2 *numbers are all subscripts! Add the coefficients
What is 2Al2O3 > 4 Al + 3O2