Chemistry Flashcards
Mass
Is the amount of matter in an object
Matter:
Anything that occupies space and has mass.
Diffusion
Is the movement of particles from an area of high concentration to an area of low concentration e.g. Spray perfume in one corner of the room, and it’spreads to the rest of the room.
In gas the particles are free in move in all directions.
The defines the volume
Particle
No definite of volume and shapes
Solid
Solid have a definite volume
Solid
Solid cannot be compressed
Solid
Solid cannot flow
Kkj
Skimp
Atom
An atom is the smallest part of an element which still has the properties of that element.
The nucleus has positive protons and neutral neutrons.
Negative electrons circle the nucleus in shells.
Atom
The number of protons is the same as the number of electrons in a neutral atom.
The number of protons in an atom is called the atomic number.
The mass number is the number of proton plus neutrons.
Bonding
A compound is when two or more atoms of different elements have a chemical bond joining them together.
Ionic bonding
Is when one atom gives electrons ,the other atom takes electrons to get a full outer shell
Covalent bonding
Is when both atoms share electrons to get a full outer shell.
When atoms work together like this they are bonding.
The octet rules states
That atoms will bond together so that each atom attains an electron arrangement with 8 electrons in its outer most shell.
