1. Matter and Measurements

Read the length of the pencil to the correct number of significant figures.

What is the correct reading for the liquid in the burette provided below?

Use the following graph for problems 1.23 and 1.24:

How many minutes were needed to reach a temperature of 45 °C?

What is the specific gravity of the following solution?

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Assume that you are delivering a solution sample from a pipette. Figures (a) and (b) show the volume level before and after dispensing the sample, respectively. State the liquid level (in mL) before and after dispensing the sample, and calculate the volume of the sample.

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Measure the length of each of the objects in diagrams (a), (b), and (c) using the metric ruler in the figure. Indicate the number of significant figures for each and the estimated digit for each.

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State the temperature on the Celsius thermometer to the correct number of significant figures:

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Use the metric ruler to measure the length in each of the following, and write the measurement, the estimated digit, and the number of significant figures:

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