# Quiz - Scientific Method | Chemistry and the Scientific Method

1

What is the SI unit of the temperature?

The SI unit of the temperature is Kelvin (K).

2

What is the SI unit of the mass?

The SI unit of mass is the kilogram (kg).

3

What is the conversion of 1 pm in meter?

pico- (p) means 10-12 ⇒ 1 pm = 10-12 m

4

What is the kinetic energy of a car (m = 1.30 x 103 kg) running at 100 km.hour-1?

Kinetic Energy (Ek) = $\frac{1}{2}$ mv2   and   100 km.hour-1 = 27.8 m.s-1

5

How many significant figures do you have in the number 0.0002030?

0.0002030 has 4 significant figures

6

What is the result of this calculation: 0.236 x 3.658?

Multiplication: number of significant figures of the answer = the smallest number of significant figures of the numbers in the calculation
0.236 and 3.658 ⇒ the answer will have 3 significant figures