Chapter 1
The amount of matter in an object.
What is mass?
Can be determined using senses or measuring tools.
What is a physical property?
All atoms are electrically neutral. True or False
True.
A 3-D area around the nucleus, which contains electrons of equal energy.
What is an electron shell?
Metal cations in a mobile 'sea' of electrons.
What is metallic bonding?
A testable explanation for an event or solution to a problem.
What is a hypothesis?
Any single thing from the periodic table. Building blocks of a compound.
What is an element?
A single piece of an element?
What is an atom?
The outer most or highest-energy electrons in the atom.
What is a valence electron?
Molecules that have the same molecular formula but different structural formula.
What is an isomer?
The study of substances and the changes they undergo.
What is chemistry?
Describes the ability of a substance to change into something new.
What is a chemical property?
Atoms of the same element with different numbers of neutrons.
What is an isotope?
When 1 atom steals 1 or more electrons from another atom causing opposite ions.
What is ionic bonding?
A diagram of a molecule that shows how the atoms are connected and how they're arranged.
What is a structural formula?
Does not change with sample size.
Intensive physical properties.
Contains 1-2 letters, first letter must be capitalized, second must be lower case.
What is a chemical symbol?
The number above the chemical symbol. The number of protons.
What is an atomic number?
The smallest positive number divided by both factors.
What is the least common multiple?
A chemical symbol surrounded by dots representing valence electrons.
What is a Lewis Dot Symbol?
A step-by-step process used to solve a problem or explain an event.
What is the Scientific Method?
Matter cannot be created nor destroyed, only changed in form.
What is the Law of Conservation of Matter?
A weighted average of all known isotopes.
What is the average atomic mass?
When a metal and a nonmetal combine. The total charge of the compound must be zero.
What is the Rule of Zero Charge?
A bonding rule where hydrogen bonds once, oxygen bonds twice, nitrogen bonds three times and carbons bonds four times.
What is HONC?