Definitionss

Click for each heading

then for the answer

STUDY STUDYSTUDY

Solute

• The substance that gets dissolved e.g. sugar

Solvent

• The liquid that does the dissolving e.g water

Solution

• Solute and solvent mixed together • e.g. sweet tea

Soluble

• Means something will dissolve

• Copper sulphate is soluble in water

• but gloss paint is insoluble in water

Sound

• Is a form of energy caused by vibrations

• Measured in decibels

• Needs a medium to travel through

• Echo is reflected sound

Speed

• Speed = Distance

Time

• m s-1

• Dad’s Silly Triangle

Salt

• Formed when an acid and base neutralise each other

• H in acid is replaced by a metal

• Sodium Chloride and Calcium chloride

Sense organ• Organ used to collect information about the

environment ( inside or outside) • Eyes –detect light(seeing) • ears - detect sound (hearing)• skin – detect contact (touch)• nose – detect chemicals in air (smell)• tongue – detect chemicals in food

(taste)

Sensitivity

• Ability of an organism to react to stimulus

Screening

• Stage 1 in water treatment• twigs and rubbish are removed by a wire

mesh

Settling

• Stage 2 in water treatment

• large particles sink to the bottom of the a settlement tank.

Soft Water• Makes a lather easily with soap

• Check – do I know hard water – • cause,

–Calcium ions dissolved in water

• Removal

–Ion exchanger takes out Calcium ions

• advantages

–Tastes good, good for bones and teeth and brewing

• Disadvantages

–Wastes soap , limescale blocks pipes

• Do I know it??

• Solute

• Solvent

• Solution

• Soluble

• Sound

• Speed

•Salt •Sense organ•Sensitivity •Settling •Screening •Soft water