The alphabet
Data always contains information, but not necessarily facts. Data can be completely made up.
always
The nucleus of an atom always contains at least 1 proton. It almost always contains at least 1 neutron as well.
"I May Not Always Be There"
A small percent . exhaled air always contains oxygen .
a rectangle
carbon hydrate
Crushed Ice
Yes.
Organic compounds always contain a carbon atom.
A chemical compound always contains exactly the same proportion of elements by mass. ---------------------------------------------------------------------------------------------------- A law that states that a compound always contains the same elements in the same proportions. Source: e2020
protons and electrons