WARNING: These are some random deep thoughts for you to ponder about when you have time to spare. It's a great way to take your exhausted mind for a little 'mental vacation' though.
I've been vexed about this whilst doing my cake experiments: what's the difference between 100g and 100ml? After some deep thoughts, here's the answer that emerged in my mind:
Firstly, is 100g of water the same as 100ml of water? Essentially, yes. Then, why do we measure them differently?
Grams is the weight of a thing (because of gravity pull). For example, you weigh 50 kilograms. A 100ml bottle of water will weigh 100g if the bottle has no weight.
Milli-litres(ml) is the space or capacity or volume that a thing (only in liquid form) takes up say, in a container. Imagine a bottle with 100ml of water - there is no space in between the water molecules and what you measure is only water itself.
Therefore, you cannot measure solid things in ml, like flour - because there is air 'space' in between the dry flour even if it is very fine flour. If you measure 100g of flour and try to measure it in ml in a container, it'll be about 150'ml' because of the extra air space or less dense-ness.
In short, for liquids, grams is almost the same as ml - the weight and the volume of water is the same. Whereas solid cannot be measured in ml.
You can approximately measure solids in grams in a container, like a cup or a jug with pre-measured indications. But bear in mind that a cup of flour is not the same weight (lesser) as a cup of sugar because of the different density, closeness, dense'ness', or air space of the solid's molecules. So you need 'more' flour to have the same weight (100g) as sugar. See illustration below.
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| Measuring jug |
GREAT CONCENTRATION
~ BRINGS ~
GREAT RELAXATION
Okay, back to reality. Do come back for another round of mental vacation.