Properties of Water

Pure water have following the characteristics, they are :

• odourless

• density = 1 g/cm3

• boiling point = 102 degree celcius

• freezing point = 0 degree celcius

• white colour

Surface tension of water is the cohesive force between water molecule and other molecule.

• True

• False

Surface tension of the water is the cohesive force between water molecule on the surface of water.

• True

• False

Cohesive force between water molecules and adhesive force between water molecules and other molecules enable this phenomenon __________________ occur.

• surface tension

• capillary action

• float on water

• photosynthesis

Water exists in this forms :

• Gas

• Plasma

• Liquid

• Solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The chemical process to separate water into hydrogen atoms and oxygen atom is called _____________________

• photosynthesis

• electrolysis

• electrosynthesis

• composition

During electrolysis, choose the correct gas is collected in the electrode

• oxygen - positive electrode (anode)

• oxygen - negative electrode (cathode)

• hydrogen - positive electrode (anode)

• hydrogen - negative electrode (cathode)

Water is a compound that consist of 3 atom which is 2 atom oxygen and 1 atom hydrogen

• True

• False

Tags

NGSS.MS-PS1-1

The presence test for hydrogen that collected in cathode is :

• light up the glowing wooden splinter

• produce a 'pop' sound using burning wooden splinter

• produce a 'pop' sound using glowing wooden splinter

• produce rotten smell using burning wooden splinter

Volume of gas collected in cathode is 2 times more compare to volume of gas collected in anode.

• True

• False