Electrons
What charge is in an electron?
Negative Charge.
Where is the Nucleus located in an atom?
The center
What is the periodic table?
A table where elements are organized by increasing atomic number
What is physical change?
A change is size, shape or state of matter.
What is a chemical change?
A change in one substances to another substance
How many electrons are in the first cloud?
Where are protons, electrons, and neutrons found?
Protons and neutrons are found in the nucleus and electrons are found in the electron cloud
What are the groups?
Vertical columns of elements with similar properties. Numbered 1 through 18
Melting ice, cutting paper, breaking glass.
What are three examples of chemical change? (Don't have to be specific)
Fireworks exploding, rusting metal
How many electrons are in the second
8
What charge is a proton?
A positive charge
What are the periods?
Horizontal rows of elements that contain increasing numbers of protons and electrons.
A physical change
Is melting ice a chemical or physical change?
It is a physical change
How many electrons are in the third cloud?
18
What charge is a neutron?
There is a neutral charge
What is the most reactive of all the metals in the periodic table?
The Alkali metals
When you burn paper is it a physical or chemical change?
It is a chemical change
Fireworks having the ability to combust is what?
Chemical change
What are the most levels and total amount of electrons in the electron cloud?
There are 4 levels and can hold up to 60 electrons all together.
What is the smallest piece of matter that still has properties of an element?
An atom.
What is the difference from the Atomic number and Atomic mass?
The atomic number is the number of protons in an atom while the atomic mass is composed of protons and neutrons.
Substance _______ change identity when it undergoes a physical change.
Does NOT.
Which can be reversed? Chemical change or physical change?