Question

date ____ name ____
section ______
postlaboratory assignment

1. state the basic unit in the metric system for each of the following.

(a) length ____ (b) mass ____
(c) volume ____ (d) temperature ____

1. state a common laboratory instrument for measuring each of the following.

(a) diameter of a beaker ____ (b) mass of a sample ____
(c) volume of water ____ (d) temperature of air ____

1. state the metric unit associated with each of the following instruments.

(a) metric ruler ____ (b) balance ____
(c) graduated cylinder ____ (d) thermometer ____

1. select the measurement that is consistent with the uncertainty of each instrument.

(a) metric ruler a: 5 cm, 5.0 cm, 5.00 cm ______
(b) metric ruler b: 5 cm, 5.0 cm, 5.00 cm ______
(c) decigram balance: 5.0 g, 5.00 g, 5.000 g ______
(d) centigram balance: 5.0 g, 5.00 g, 5.000 g ______
(e) milligram balance: 5.0 g, 5.00 g, 5.000 g ______
(f) graduated cylinder: 5 ml, 5.0 ml, 5.00 ml ______
(g) celsius thermometer: 5 °c, 5.0 °c, 5.00 °c ______

1. state the uncertainty (for example, ± 0.5 cm) in each of the following measurements.

(a) 25.00 cm ____ (b) 25.000 g ____
(c) 25.0 ml ____ (d) 25.0 °c ____

Explanation:

Question 1

(a)

Step1: Recall metric length unit

The basic metric unit for length is meter.

Step1: Recall metric mass unit

The basic metric unit for mass is gram.

Step1: Recall metric volume unit

The basic metric unit for volume is cubic meter (or liter for liquid volume, but the base unit is cubic meter).

Answer:

meter

(b)