End of Year Chemistry

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.

• alpha particles have a positive charge.

• gold is not a dense as previously thought.

• there is a dense positively charged nucleus at the center of an atom.

Tags

NGSS.MS-PS1-1

​ Where the Alkali metals are found on the PT?

• Group 1

• Group 7

• Group 5

• Group 0

Arrange the alkali metal from most reactive to least reactive

• Francium

• Potassium

• Sodium

• Lithium

• Cesium

What is the most reactive alkali metal?

How are alkali metals stored and why?

What happens to the melting points of the alkali metals as you go down the group? ​ (a)  

• They decrease

• They increase

What is made when an alkali metal reacts with oxygen?

• alkali metal oxide

• alkali metal chloride

• alkali metal hydroxide

• alkali metal nitrate

What products are made when an alkali metal reacts with water?

The soluble product that is made when an alkali reacts with water can be tested with UI – what colour does UI turn with this product and what pH number does this colour represent?

• Blue

• Green

• Orange

• Red

HNO3 is...

• an acid

• a base

• a salt

• an ionic compound