C4 Flashcards
1
Q
What is the law of conservation of mass?
A
No atoms are lost or made during a chemical reactions so mass of the products is equal to the mass of the reactants
2
Q
What is the relative formula mass?
A
Sum of the relative atomic masses of the atoms in the numbers shown in the formula.
3
Q
What is the problem with a product of gas?
A
The mass is always the same but it is harder to measure
4
Q
What is a mole?
A
Mass of one mole of a substance in grams is numerically equal to its relative formula mass
