Worksheet Chapter 1: Introduction to Scientific Investigation

1. Fill in the blank: The standard SI unit used for measuring electric current is the ________.

2. An irregular stone is submerged in a measuring cylinder containing 30 cm³ of water. The water level rises to 42 cm³. If the stone has a mass of 36 g, compute the density of the stone.

3. Which tool is most suitable for measuring exactly 25.0 cm³ of liquid reagent during a titration procedure?

4. Arrange the following three liquids in order from bottom to top in a cylinder based on density: Water (1.0 g/cm³), Mercury (13.6 g/cm³), and Olive Oil (0.92 g/cm³). Explain your reasoning.

5. A student investigates how pendulum length affects its time taken to complete 10 oscillations. Identify: (a) Manipulated variable, (b) Responding variable, (c) Constant variable.

6. A wooden block has mass of 240 g and dimensions of 5 cm × 4 cm × 6 cm. Calculate its density and state whether it will float or sink in pure water (density = 1.0 g/cm³).

7. True or False: Parallax error is classified as a systematic error.

8. Convert a length of 0.045 kilometers into centimeters.

9. Explain the difference between systematic errors and random errors, giving one example of each.

10. True or False: A luminous flame produces more soot and reaches higher temperatures than a non-luminous flame.