Chem1- Matter to Subatomic Particles

Which is incorrectly paired?

• Thomson - electrons

• Chadwick - neutrons

• Rutherford - nucleus

• Dalton - protons

Which is an extensive property?

• temperature

• density

• area

• viscosity

Which of the following statements is INCORRECT?

• Atoms are neutrally charged while ions are electrically charged.

• Isotopes are same element with different number of protons and neutrons.

• Number of electrons depends on the charge of atom.

• Number of protons is always the same with the atomic number.

What is the volume of the liquid?

• 6 mL

• 63 mL

• 63.5 mL

• 64 mL

How are systematic errors removed usually for an instrument?

• By not using it for some time

• By replacing it

• By using a repairing service

• By re-calibrating it

In an experiment, it is found that the experimental value is very close to actual value, hence the experimental value can be called:

• accurate

• precise

• suitable

• accepted

Determine the number of significant figures.

0.001 052 0 g

• 3

• 4

• 5

• 8

Determine the number of significant figures.

110 230 300 meters

• 5

• 6

• 7

• 8

Apply rules on Operations involving Significant Figures

0.123 60 + 1.48

• 1.60

• 1.6

• 1.604

• 1.6036

Apply rules on Operations involving Significant Figures

0.002 354 x 4.3

• 0.01

• 0.010

• 0.01012

• 0.010122