where can we found all chemical elements?
in the periodic table.
what is mass?
mass is the amount of matter
An atom is ...
the smallest particule of matter.
atoms are the smallest particles of...
matter
how do we measure mass?
with grams and kilograms using balances and scales.
what are atoms?
are the smallest part off matter
where can we found all chemical elements?
in the periodic table.
What are molecules made of?
2 or more atoms.
density is ...
the amount of mass that there are in 1 unit of volume.
how do we represent chemical elements?
with 1 or 2 letters.
something is rigid when it is difficult...
to bend
when is something impermeable?
something is impermeable when liquid can't pass through the objet.
What is mass?
Mass is the amount of matter in an object
What is volume?
Volume is the amount of matter in a object.
Matter is everything that has volume and...
mass
Water is made of 2 atoms of hydrogen and ...
1 of oxigen
What is density?
is the amount of mass in a unit of volume.
scales __ __ __ __ __ __ __ the mass
measure
Pure elements are...
the molecules that contains only 1 tipe of atoms.
what has more mass a rock or wood?
a rock