Matter
What are the 3 main states of matter?
_____ is the smallest unit of an element
Atom
The Periodic Table consists of over ____ different elements
100
____ is a change that affects one or more physical properties or a substance and is more easily reversed
Physical change
Name something that is considered matter
Desk, humans, food, air, etc.
This is considered the central part of an atom
Nucleus
Protons
Foaming and fizzing are considered ____ change
Chemical
What state of matter has close together particles and has the least amount of energy?
Solid
____ is an uncharged particle
Neutron
The rows on the periodic table are called ________.
The columns on a periodic table are called ________.
Periods
Groups
When a car shows sign of rust, what type of change is this?
Chemical
____, _____, ____, and ____, are NOT considered matter
Heat, energy, light, and sound
The nucleus consists of these two types of particles
Protons and Neutrons
_____ elements are shiny and do not shatter
Metals
What does "combustibility" mean?
a measure of how easily a substance bursts into flame, through fire or combustion
There are technically 4 states of matter. What is the least common state we know?
Plasma
When calculating mass number, which particle do you NOT count?
Electron
What are the three types of elements in the periodic table
metals, nonmetals, and metalloids
Substances before a chemical change are called ____. After a chemical change, the new substances formed are called _____.
Reactants and Products