Question

Please help with these 4 questions

Semester Review

Section 1: Measuring Matter

During this semester, you learned about an international system of units that scientists use to describe measurements of matter. This system is called the International System of Units (SI).

1. Explain why this system was developed.

2. Imagine you conducted a scienti?c experiment in the lab and you want another scientist to repeat it. If you used the standard SI unit for mass, what unit would you be using?

3. What SI unit would you use to describe temperature in this experiment?

4. If you write these directions for an experiment, why would someone else have a problem following them? "Hold the chemicals 1.5 feet above the heat source."

Hint: You can ?nd the answers to this section's questions in Lesson 3 of Unit 1.

Answer 1

1.International System of Units (SI), French Système Internationale d'Unités,international decimal system of weights and measures derived from and extending the metric system of units. Adopted by the 11th General Conference on Weights and Measures in 1960, it is abbreviated SI in all languages

2.The kilogram is the SI base unit of mass and is equal to the mass of the international prototype of the kilogram , a platinum-iridium standard that is kept at the International Bureau of Weights and Measures

3.The SI units used to measure temperature are Kelvin, denoted as K.If you want to convert Celsius in to Kelvin just add 273 to the temperature in Celsius.

4.cuz they are dumb