1 cc = 1 ml？

1 kg = 500g

Density of water: 1g/cm3 = 1g/ml.

Mass = density × volume

The mass of 500ml water is: 1g/ml× 500ml = 500g.

Extended data:

Modern "gold" has the following conversion to metric system according to local usage habits:

Chinese mainland 1 kg equals 500 grams (g).

Hong Kong and Macao 1 kg is about 605(g).

Taiwan Province province 1 kg is equal to 600g.

At present, Hong Kong law stipulates that one kilogram is equal to one hundredth of a load or sixteen taels, that is, 604.82 grams (g).

Baidu encyclopedia-Jin