CCa study guide Flashcards
Independet variable
It is a variable that stands alone and isn’t changed by the other variables you are trying to measure
dependent Variable
It is something that depends on other factors
Theory
means an untested hunch or guess without supporting evidence.
Mass
the ammount of matter an object is made of
Matter
Matter is anything that takes up space and can be weighed.
Condensation
Gas to liquid
What is a proton what is its charge and where is it located
Positive molecules in the nucleus
what is a neutron what is its charge and where is it located
Neutral molecules int the nucleus
what is an electron what is its charge and where is it located
Negative particles that float around the nucleus’s in the electron cloud
What is the nucleus
is a positively charged region at the center of the atom. It consists of two types of subatomic particles packed tightly together. protons and neutrons
What is an element
A substance that cannot be broken down into simpler substances by chemical means. An element is composed of the smae type of
atoms
Compound
compound is a substance made up of two or more different chemical elements combined
Atomic number
The number of protons in a atom
Molecule
a group of atoms bonded together
Atomic mass
mass number = protons + neutrons. I
How many protons, neutrons, and electrons in calcium
20
How many protons, neutrons, and electrons in Gold
79p, 79e, 118n
How many protons, neutrons, and electrons in Mercuryy
80 p, 80e , 121n
How many protons, neutrons, and electrons in Plutonium
95p, 94e, 150n
What’s the difference between an element and a molecule
An element is a pure substance made up of only one type of atom, while a molecule is a group of two or more atoms
The metals are located where on the P.T
Left of the zig zag line
Non metals are located where on the P.T
right of the zig zag line
What elements are gases at room temp
Noble gasses, along with hydrogen, nitrogen, and oxygen
