The Periodic Table

Question 1

Which element is a Group 7 element?

Accepted Answer

Iodine

Question 2

What's the equation for the reaction of Sodium with water?

Accepted Answer

Na + H2O --> NaOH + H2

Question 3

If you react and alkali metal with water, the pH of the solution will (2 right answers):

Accepted Answer

become alkaline, increase (pH > 7)

Question 4

Group 0 elements are (more than one answer)

Accepted Answer

unreactive, colourless

Question 5

Which one is NOT a typical property of metals?

Accepted Answer

Low density

Question 6

What is the atomic number of an element?

Accepted Answer

The number of protons

Question 7

Bromine + Potassium Iodide --->

Accepted Answer

Potassium bromide + Iodine

Question 8

What is the name of the smaller number near each element's symbol?

Accepted Answer

The atomic number

Question 9

Which one is the least reactive alkali metal?

Accepted Answer

Lithium

Question 10

What is the other name for Group 1 elements?

Accepted Answer

Alkali Metals

Question 11

What is the name for the horizontal rows in the periodic table?

Accepted Answer

Periods

Question 12

What is it meant by 'density' of a substance?

Accepted Answer

Its mass per volume

Question 13

The boiling point of a substance is:

Accepted Answer

The temperature at which it goes from liquid to gas, The temperature at which it goes from gas to liquid

Question 14

Which one of these metals is a liquid at room temperature?

Accepted Answer

Mercury

Question 15

When a solid turns straight to gas we say it:

Accepted Answer

sublimes

Question 16

How many elements have been discovered?

Accepted Answer

118

Question 17

Which one of these elements is NOT a gas at room temperature and pressure

Accepted Answer

Bromine

Questions 17