1a) What are the properties of acids? b) Name some everyday products that contain acid.

2a) What is similar about the formula for hydrochloric acid and that for
sodium chloride?
b) What is different about these two formulae?

3) The illustration below shows a label on a jar of orange preserve.

Allergy advice: No nuts.
Suitable for vegetarians.
Ingredients: Sugar, oranges,
water, concentrated lemon
juice, sodium citrate, citric
acid, bitter orange oil.
Prepared with 30 g of fruit
per 100 g.

a) Which ingredient is a salt?
b) Find out why this ingredient is added to some
kinds of food.

the increase of protons   hope this

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

i think tornado but not 100%