Chapter 2 Vocab Flashcards
A given compound always contain exactly the same proportion of elements by mass
Law of definite proportion
Mass is neither created nor destroyed in a chemical reaction
Law of conservation of mass
When two elements form a series of compounds, the ratios of the masses of the second element that combine with 1 g of the first element can always be reduced to small whole numbers
Law of multiple proportions
At the same temperature and pressure, equal volumes of different gases contain the same number of particles
Avogadro’s hypothesis
Atoms with the same number of protons but different numbers of neutrons
Isotope
What does the atomic number tell you?
Number of protons
What does atomic mass tell you?
Total mass of protons and neutrons
The forces that hold atoms together in compounds
Chemical bonds
Bonds that share electrons
Covalent
An atom or group of atoms that has a net positive or negative charge
Ion
Positive charged ion
Cation
Negative charged ion
Anion
The force of attraction between oppositely charged ions
Ionic bonding
A solid consisted of oppositely charged ions
Ionic solid
Vertical columns on the periodic table
Groups/families
