Have an account?
Skip to Content
Introducing new Paper mode
No student devices needed. Know more
10 questions
Show Answers
See Preview
- Multiple ChoicePlease save your changes before editing any questions.What is the Law of Conservation of Mass?It states that no matter can be created or destroyed.It states that no energy can be created or destroyed.It states that matter can be created or destroyed.It states that no sound can be created or destroyed.
- Multiple ChoicePlease save your changes before editing any questions.What is a coefficient?The small number on the right of the chemical symbol.The large number in front of a chemical formula.The number in between the chemical symbols.The number behind a chemical formula.
- Multiple ChoicePlease save your changes before editing any questions.What is the part of the chemical equation in green called?
Fe + S --> FeSproductsreactantsyieldchemical formula - Multiple ChoicePlease save your changes before editing any questions.What is the little number after an element in a chemical equation called.
Example: H2CoefficientSubscriptAtomEquation - Multiple ChoicePlease save your changes before editing any questions.What coefficient should be used to make the following equation balanced?
N2+O2--> _NO1234 - Multiple ChoicePlease save your changes before editing any questions.Which problem is balanced?
(Check ALL answers)PbO2 + 2H2SO2 + H20 --> H2SO42Na + 2H2O --> 2NaOH + H2 - Multiple ChoicePlease save your changes before editing any questions.How many elements are in C6H12O6?1234
- Multiple ChoicePlease save your changes before editing any questions.Element or compound?
H2Oelementcompound - Multiple ChoicePlease save your changes before editing any questions.How many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H21234 - Multiple ChoicePlease save your changes before editing any questions.Is this balanced?
Al + O2 → 2Al2O3YesNo