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How can an atoms identity (name) be determined?
How can an atom's number of protons be determined?
Your number of protons is the same as the atomic number/ by looking at the elements atomic number.
How can an atom's mass number be determined?
Protons + Neutrons = mass number
How can an atom's number of electrons be determined?
Your number of electrons is the same as the number of protons and the atomic number.
How can an atom's number of neutrons be determined?
Atomic mass - atomic number = number of neutrons.
What is an atom?
What is the job of the protons in an atom?
Determines the elements identity.
What is the function of the electrons in an atom?
Helps atoms bond and form compounds.
What is the job of the neutrons in an atom?
Stabilizes the atom.
What are covalent bonds?
Form a bond with no metallic ions (bad conductors of heat and electricity.
Forms with negative ions; ionic bonds occur between a metallic and non-metallic ion (can conduct heat and electricity)
What are ions?
An atom that carries an electrical charge.
What are metallic bonds?
Form when electrons are shared by two metal ions (the best at conducting heat and electricity).
What is an isotope?
Different forms of a single atom; atoms with the same number of protons but a different number of neutrons - example: Carbon 14
The forces holding the nucleus fall apart because they are not strong enough-producing the decay.
What is the smallest particle of matter?
An atom
What is the current model for a atom called?
Electron cloud model.
Why haven't scientists been able to study atoms directly?
They are too small for them to see even with the microscopes.
What are the three basic parts of an atom?
Protons, neutrons, and electrons.
What electrical changes do these parts have?
Protons- positive charge Neutrons- neutral charge Electrons- negative charge
Where are the basic parts found?
Protons- nucleus Neutrons- nucleus Electrons- floating outside the nucleus in the electron cloud/ the energy levels.
What part of the atom takes up most of its space?
The electron cloud/ the energy levels around the nucleus of an atom.
Where is most of the mass of an atom found?
In the nucleus.
Energy level one can only have up to 2 valence electrons and energy level two can only have up to 8 valence electrons.
Solid: definite shape and volume Liquid: definite volume indefinite shape Gas: indefinite shape and volume Plasma: indefinite shape and volume (have an electrical charge.