43 FE

1.     What is matter?

• A.    Solid, liquid and gasses

• A.    Anything that occupies space

• A.    Anything that has mass

• A.    All of the above

20.What is the molar mass for sodium hydroxide, NaOH?

• A.     40 g/mol

• A.     41 g/mol

• A.     39 g/mol

• A.     24 g/mol

What is the empirical formula of the chemical equation, S₂Cl₂?

• A.   S₂Cl₂

• A.   S₂Cl

• A.   SCl₂

• A.   SCl

19. Calculate the number of atoms in 1.6 moles of magnesium?

• A.     38.89 atoms

• A.     2.66 x 10^-24

• A.     9.63 x 10^-23

• A.     9.63 x 10²³

1.     Which of the following is the physical property of a matter?

• Oxidation rate

• Odour

• Flammability

• Toxicity

1.     It can change from physical to liquid state with X process. What is process X?

• Sublimation

• Freezing

• Melting

• Condensation

1.     What is the charge of a neutron?

• Positive

• Negative

• Neutral

12. How many numbers of neutrons for cadminum?

• 112.4

• 48

• 64

• 160

9. An atom that has lost an electron will become ____________ charge.

• No change

• Positive

• Negative

• Neutral

13. Which of the following is the characteristic of group 1 in periodic table?

• A.     Not reactive metals

• A.     Very reactive metals

• A.     Not reactive non-metals

• A.     Very reactive non-metal