Uses chemical symbols to show how many atoms of different elements are present in particle of an element or compound.

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Study for the Cambridge Science – States of Matter Test. Prepare with flashcards and multiple choice questions, with hints and explanations for each question. Ready yourself for your exam!

Multiple Choice

Uses chemical symbols to show how many atoms of different elements are present in particle of an element or compound.

Chemical formulas are the way we show what a particle is made of and how many atoms of each element it contains. The symbols for the elements are written with subscripts indicating the number of atoms of each element; for example, H2O has two hydrogens and one oxygen, and NaCl has one of each. This directly encodes the exact counts in the particle. The atomic number tells how many protons an atom has, not how many atoms are in a molecule; isotopes refer to variants of an element with different neutron numbers; and bonding describes how atoms connect, not the exact counts.

Uses chemical symbols to show how many atoms of different elements are present in particle of an element or compound.

Study for the Cambridge Science – States of Matter Test. Prepare with flashcards and multiple choice questions, with hints and explanations for each question. Ready yourself for your exam!

Uses chemical symbols to show how many atoms of different elements are present in particle of an element or compound.

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