Understanding Significant Figures

What is the primary purpose of significant figures in scientific measurements?

• To indicate the reliability of a measurement

• To mark the decimal place

• To convert units

• To simplify calculations

Which of the following digits are always considered significant?

• Zeros between non-zero digits

• Leading zeros

• Trailing zeros without a decimal

• Non-zero digits

In the number 0.00670, how many significant figures are there?

• 2

• 3

• 4

• 5

What makes a number of significant figures ambiguous?

• Presence of a decimal point

• Absence of a decimal point

• Exact numbers

• Zeros between non-zero digits

How many significant figures are in the number 1300 if no decimal point is shown?

• Ambiguous

• 3

• 2

• 4

In scientific notation, which part of the number is used to count significant figures?

• Neither

• Both the coefficient and the power of 10

• The coefficient

• The power of 10

How many significant figures are in the number 8.800 x 10^3?

• 4

• 3

• 2

• 5

Why do exact numbers have an infinite number of significant figures?

• They are approximations

• They are man-made conversions

• They have a decimal point

• They are measured values

How many significant figures are in the measurement 500 grams if no decimal is shown?

• 1

• 2

• 3

• Ambiguous

What is the significance of counting apples in terms of significant figures?

• It has no significant figures

• It is a measurement

• It is ambiguous

• It has infinite significant figures