Chemical Reactions Flashcards
What does this symbol mean?
Environmental hazard
What precaution should you take if a chemical contains this symbol?
Environmental hazard - careful disposal is required. Do not place down the sink.
What does this symbol mean?
Toxic
If you spill some toxic or corrosive chemicals what should you do?
Clean up immediately and wash hands thoroughly.
What does this symbol mean?
Corrosive
What does this symbol mean?
Explosive
What does this symbol mean?
Irritant
What does this symbol mean?
Flammable
What precaution should you take with flammable chemicals
Keep away from heat, fire and sparks. No naked flames.
What is this symbol?
Oxidiser
What is this symbol?
Respiratory irritant
True or False - Acids are always corrosive?
False. Acids can be irritants or non-hazardous
True or False - Acids are more dangerous than alkalis?
False.
When handling irritants what precautions should you take?
Wear safety glasses. Wash spills immediately.
What colour do acids turn litmus?
Red
What colour do alkalis turn litmus?
Blue
What colour do neutral solutions turn litmus?
Purple
Is water acid, alkali or neutral?
neutral
Give 3 examples of acids found in everyday life.
Fizzy drinks, vinegar, juice, battery acid
Give 3 examples of alkalis found in everyday life.
Toothpaste, washing powder, hair dye, drain cleaner, bleach
What colour will universal indicator be in acids
Red (strong acids) orange or yellow (weaker acids)
What is the pH of a strong acid
0 or 1
What is the pH of a neutral solution
7
What is the pH of an acid?
<7
What is the pH of an alkali?
> 7