Questions: - Significant figures - Scientific notation - The metric system - Density calculations

Solution Steps

• Significant figures convey the reliability and accuracy of a measurement or calculation.
• They include all the non-zero digits, any zeros between significant digits, and any trailing zeros in the decimal portion.
• Leading zeros are not considered significant.
• The number of significant figures is used to determine the precision of the measurement.

• Scientific notation is a way to express very large or very small numbers.
• It is written as the product of a number between 1 and 10 and a power of 10.
• This notation helps in simplifying calculations and expressing measurements concisely.
• It is commonly used in scientific and engineering fields to handle extreme values.

• The metric system is an international system of measurement based on powers of ten.
• It includes units such as meters for length, kilograms for mass, and liters for volume.
• Prefixes like kilo-, centi-, and milli- are used to denote multiples or fractions of the base units.
• The metric system is widely used in science, industry, and everyday life for its simplicity and consistency.

Final Answer