Atoms
What particles are found in an atom?
protons electrons and neutrons
What are the first two elements of the periodic table?
Hydrogen and Helium.
If the object changes color is it a chemical or a physical change?
chemical change
Draw the Bohr Ruthford Diagram for H
1 electron
The three states of matter are:
Solid Liquid Gas
Which of the following are found in the nucleus? Protons, Electrons Neutrons
Protons Electrons
True or False: Neon has a full valence shell.
True.
Water freezing is a chemical or physical change?
a physical change becuase no new substance was made
In a Bohr Rutherford Diagram explain the number of electrons that each shell can hold.
the first one 2, and the rest 8
Give one example of chemistry in our every day lives
...
The periodic table is separated into two groups.
Metals and Non Metals
Describe some of the indicators that a chemical change has occurred.
smell heat or light colour change
Elements with only one valence electron are located in what group in the periodic table.
Alkali Metals
Give the chemical formula for water
H2O
Name all the charges of the following and explain where they are found. Protons Electrons Neutrons
Protons (+) electrons (-) neutrons. (n)
What are the following elements names? Na K C Cl
sodium potassium calcium chlorine
Crushing a can is a chemical of physical change
physical
The group with a full valence shell is called what?
Noble Gases.
The number of protons also equals the number of...
electrons
When an atom receives electrons what charge does the atom take on ?
a negative charge
What is a Lewis Dot Diagram?
Is the diagram that shows only the valence electrons
Is cooking an egg a chemical or physical change ?
Chemical change because a new substance has been made
If an atom gives away its electrons to become stable it has a _____ charge
positive
Pb and Ag are the symbols for what elements
Gold and Lead