Q1. Write in formula equations i. ZINC + HYDROCHLORIC ACID  ZINC CHLORIDE + HYDROGEN.
ii. SODIUM + OXYGEN  SODIUM OXIDE .
iii. CHLORINE + SODIUM BROMIDE --- SODIUM CHLORIDE + BROMINE
iv. CALCIUM + SILVER NITRATE  CALCIUM NITRATE + SILVER
v. HYDROGEN + OXYGEN -- WATER
Q2. JUSTIFY THE ABOVE FORMULA EQUATIONS INTO REDOX IN TERMS OF ;
i. LOSS AND GAIN OF ELECTRONES
ii. CHANGE IN OXIDATION NUMBER .

a) the particles of the chair are strongly held together.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but