The Progress of Scientific Knowledge Answers

Roberto wants to measure the lengths of the sides of a metal cube. Which tool should he use?

An experimental procedure calls for 35.9 g sodium chloride and 15.2 g silver nitrate. What tool should be used to measure these substances?

4. 0.0045 cm or 0.0045 in. Larger quantity:

Mark needs to determine how much the temperature of a solution changes during a chemical reaction. Which tool does he need?

To make a solution, Sian must measure 15.0 mL water. Which tool should she use?

For a certain experiment, Juan must measure the concentration of a certain substance in a solution over time. He needs to collect a measurement every 0.05 seconds. He then needs to display his data in a graph and place that graph in a text document. Select the best tools to use for this experiment. Check all that apply.

Alice needs to calculate the average pressure inside a gas cylinder. She has access to both a data table showing the pressure over time and a graph of pressure over time. Which representation is probably most useful to her if she wants a precise answer?

A chemical reaction produces solid sulfur as a product. Which unit should be used to describe the mass of the sulfur produced?

2. 0.5 kg or 0.5 lb Larger quantity:

4. 0.0045 cm or 0.0045 in. Larger quantity:

Rajesh conducts an experiment to determine how quickly three different substances absorb heat. He measures the temperature of each substance over time. If he wants to quickly compare the heat absorption rates of the three substances, which data representation will probably be most useful to him?

3. 2.5 qt or 2.5 L Larger quantity: