The Periodic Table

Question 1

How are elements arranged in the periodic table?

Answer 1

Based on similar chemical properties.

Question 2

Name the scientist who arranged elements into the periodic table:

Answer 2

Mendeleev

Question 3

Why were gaps left in the old version of the periodic table?

Answer 3

For undiscovered elements.

Question 4

Name three metals:

Answer 4

Iron, Copper and Zinc

Question 5

Name three non-metals:

Answer 5

Carbon, Nitrogen and Oxygen

Question 6

Where do you find metals in the periodic table?

Answer 6

Left hand side

Question 7

Where do you find non-metals in the periodic table?

Answer 7

Right hand side.

Question 8

The bar chart below shows the melting point of period 2 elements. Describe the trend in melting point?

Answer 8

As you go across period 2, the melting point increases from lithium to carbon.

The melting point then decreases further along period 2, from nitrogen to helium.

Question 9

State three properties of metals:

Answer 9

High density, ductile, shiny

Question 10

State three properties of non-metals:

Answer 10

Brittle, dull, low density

Question 11

State three properties of alkali metals:

Answer 11

Good conductor of heat and electricity. Shiny when cut. Low density - floats on water.

Question 12

Complete the following word equation:

Sodium + Water

Answer 12

Sodium hydroxide + Hydrogen

Question 13

Complete the following word equation:

Lithium + Water

Answer 13

Lithium hydroxide + Hydrogen

Question 14

Write the chemical formula for potassium hydroxide:

Answer 14

KOH

Question 15

Describe how to test for hydrogen gas:

Answer 15

Squeaky pop test. Use a lit splint.

Question 16

Describe the trend in reactivity of Group 1 elements:

Answer 16

Reactivity increases down the group.

Question 17

State two properties of Group 7 elements:

Answer 17

They do not conduct electricity. They have low melting points.

Question 18

State what is meant by the term ‘displacement reaction’?

Answer 18

A reaction where a more reactive halogen displaces a least reactive halogen.

Question 19

Complete the following word equation:

Potassium iodide + chlorine

Answer 19

Potassium chloride + Iodine

Question 20

Give three examples of noble gases:

Answer 20

Helium, Argon, Xeon

Question 21

State one use of helium:

Answer 21

Used in balloons

Question 22

State one use of neon:

Answer 22

Used in advertising signs.

Question 23

Describe one chemical property of the noble gases:

Answer 23

They are unreactive. Noble gases do not react with any element/ compound.

Question 24

Look at the table below. Describe the trend in boiling points of noble gases:

Answer 24

As you go down group 0, the boiling point increases.

Helium has the lowest boiling point.
Xenon has the highest boiling point.