Chemistry Scientific Notation Worksheet Answers

Chemistry Scientific Notation Worksheet Answers

Scientific notation is a way to express very large or very small numbers in a more manageable form. It is commonly used in chemistry to express quantities such as concentrations, masses, and volumes. Here are the answers to a chemistry scientific notation worksheet:

Part 1: Converting to Scientific Notation

1. 456,000,000,000 → 4.56 × 10^11
2. 0.000000456 → 4.56 × 10^-7
3. 987,654,321 → 9.876 × 10^8
4. 0.0000987 → 9.87 × 10^-5
5. 123,456,789 → 1.235 × 10^8

Part 2: Converting from Scientific Notation

1. 3.45 × 10^6 → 3,450,000
2. 2.17 × 10^-3 → 0.00217
3. 9.87 × 10^5 → 987,000
4. 4.56 × 10^-9 → 0.00000000456
5. 1.23 × 10^4 → 12,300

Part 3: Operations with Scientific Notation

1. (2.5 × 10^3) + (3.7 × 10^3) → 6.2 × 10^3
2. (4.2 × 10^-4) × (2.1 × 10^5) → 8.82 × 10^1
3. (9.8 × 10^2) - (4.5 × 10^2) → 5.3 × 10^2
4. (6.7 × 10^3) ÷ (3.4 × 10^2) → 1.97 × 10^1
5. (8.3 × 10^-6) × (2.9 × 10^7) → 2.41 × 10^2

Notes

• When converting to scientific notation, move the decimal point to the left until you have a number between 1 and 10.
• When converting from scientific notation, move the decimal point to the right by the number of places indicated by the exponent.
• When performing operations with numbers in scientific notation, the exponents must be the same before you can add or subtract.

📝 Note: Make sure to follow the order of operations (PEMDAS) when performing calculations with scientific notation.

To review, scientific notation is a powerful tool for expressing and manipulating large and small numbers in chemistry. By mastering the rules for converting to and from scientific notation, you can simplify complex calculations and improve your problem-solving skills.

Related Terms:

• Scientific notation Worksheet PDF
• Operations with scientific notation worksheet
• Chemistry scientific notation calculator