Caesium, lithium potassium and sodium are all in Group of
the Periodic Table
(a) Place these metals in order of reactivity starting with the
most reactive.
(b) All Group 1 elements react in the same manner with
water.
(i) Name the chemical products of the reaction
between caesium and water.
(ii) Write a balanced chemical equation for the
reaction of caesium with water. Include state
symbols.
(iii) What three things would you expect to see if small
pieces of caesium were dropped in water in a glass
trough?
(C) What is the other name for Group 1 elements.

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.