Basic Chemistry
Anything that takes up space and has weight
What is matter?
The only metal that is liquid at room temperature
What is mercury?
The most abundant element on the earth's surface
What is oxygen?
Tiny particles of which all matter is composed
What is an atom?
A substance composed of one or more types of atoms bonded together
What is a compound?
The measure of the pull of gravity on an object
What is weight?
The densest of all common metals
What is lead?
The simplest kind of atom with one proton and one electron
What is hydrogen?
This part of the atom has a positive charge
What is a proton?
The hardest of all known substances
What is the diamond?
What is density?
The semimetal used to make computer chips
What is silicon?
The name given to the number of protons in an element
What is the atomic number?
The tiny particles that swarm at tremendous speeds around the core of an atom
What are electrons?
A compound made of molecules
What is a molecular compound?
The amount of matter that makes up an object
What is mass?
The element that is the basic building block of all the compounds
What is carbon?
The elements that do not combine with anything else except under unusual circumstances
What are the noble gases?
The tiny, extremely dense core at the center of the atom
What is the nucleus?
A process in which atoms of elements or compounds are rearranged to form new substances
What is a chemical reaction?
The __ of an object changes from place to place
What is weight?
The halogen that is added to table salt to prevent a deficiency disease
What is iodine?
Highly reactive elements that tend to form compounds with alkali and alkaline earth metals
What are the halogens?
A normal atoms number of protons and electrons
What is equal?
A compound made of charged atoms
What is an ionic compound?