Comp. 1 Part 1 Flashcards
What determines whether an atom is an ion?
The way to determine if an atom is an ion would be depending on the Protons and electrons.
What subatomic particles give an atom stability?
Depending on the amount of neutrons and electrons will determine how stable it will become.
When you have more protons than electrons, what charge of ion are you?
Positive charge
When you have fewer protons than electrons, what charge ion are you?
Negative ion
What does the top left corner of the element symbol show you about an atom?
The top left corner is the mass
What does the bottom left corner of the element symbol show you about an atom?
The atomic number
Isotopes: Atoms with different numbers of:
Neutrons
How many protons, neutrons, and electrons are there in: Carbon-13
Protons:6
Neutrons:6
Electrons:7
What is the hyphen notation for: 1H
Hydrogen-1
What is the definition of elements?
An element is composed of atoms that have the same atomic number, that is, each atom has the same number of protons in its nucleus as all other atoms of that element.
What is the definition of matter? (The way scientists use it)
Matter is the amount of mass something takes up that is made of atoms. Matter is found everywhere by tiny particles. Matter however is not found in electromagnetic radiation. (light)
What is a chemical change?
any change that results in the formation of new chemical substances
Example: iron rusting (iron oxide forms)
What is physical change?
changes affecting the form of a chemical substance, but not its chemical composition
Example: going from a solid gas or liquid
What are atoms?
Basic unit of a chemical element
Example: hydrogen, helium, carbon etc.
What is a proton?
a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge
