Chemistry Year 7 - Indicators
Acids and alkalis are chemical opposites. Indicators includes Universal Indicator and Phenolphthalein.
The PH scale goes from 1 to 14. Acids are with PHs less than 7, and alkalis with PHs more than 7. Neutral substances have a PH of about 7.
Universal Indicator next to the PH scale:
The PH scale goes from 1 to 14. Acids are with PHs less than 7, and alkalis with PHs more than 7. Neutral substances have a PH of about 7.
Universal Indicator next to the PH scale:
Acids include Hydrochloric Acid (PH 2) and Citric Acid (PH 3)
Water is neutral (PH 7)
Alkalis include Sodium Hydroxide (PH 8.5) and Limewater (PH 10)
Water is neutral (PH 7)
Alkalis include Sodium Hydroxide (PH 8.5) and Limewater (PH 10)