WITH 100% CORRECT ANSWERS
What is the circumference of a circle? - Answer- 2πr
What is an atom? - Answer- The smallest unit of matter
What are protons? - Answer- Positively charged particles
What are electrons? - Answer- Negatively charged particles
What is the periodic table? - Answer- A chart organizing elements by properties and
atomic number
What is a chemical reaction? - Answer- A process where substances change into new
substances
What is a complete sentence? - Answer- A subject + verb + complete thought
What is a run-on sentence? - Answer- Two sentences incorrectly joined
What is a fragment? - Answer- An incomplete sentence
When do you use a comma? - Answer- To separate ideas, lists, or clauses
What is the order of operations? - Answer- PEMDAS — Parentheses, Exponents,
Multiplication/Division (left to right), Addition/Subtraction (left to right)
How do you convert a fraction to a decimal? - Answer- Divide numerator by
denominator
What is 25% as a decimal? - Answer- 0.25
How do you find a percentage of a number? - Answer- Multiply the number by the
percentage (as a decimal).
What is a ratio? - Answer- A ratio is used to express a relationship between two units or
quantities by division.
How do you simplify a fraction? - Answer- Divide the numerator and denominator by
their greatest common factor.