Flashcards in Chapter 9 Deck (28):
At the center of every atom is a _______ containing protons and neutrons
The nucleus represents most of the atom's ________
The rest of the atom is empty except for the atom's
What is an electron cloud?
The area of space around the nucleus
Does an electron's energy depend on what level it is in?
Yes, electrons in the level closest to the nucleus have the lowest amount of energy and are said to be in energy level one. Electrons farthest from the nucleus have the highest amount of energy and are the easiest to remove.
What are energy levels?
The different areas for an electron in an atom
How many electrons are in level 1?
How many electrons are in level 2?
How many electrons are there in level 3?
How many electrons are in level 4?
How many electrons are in level 5?
How many electrons are in level 6?
How many electrons are in level 7?
What is an ion?
An atom that is no longer neutral because it has lost or gained an electron
What is an ionic bond?
The attraction that holds ions close together
What is a compound?
Pure substance containing two or more elements that are chemically bonded
What is a metallic bond?
Forms when metal atoms share their pooled electrons
What is a covalent bond?
The chemical that forms between nonmetal atoms when they share electrons
What is a molecule?
Neutral particle formed when atoms share electrons, basic unit of a molecular compound
What is a polar molecule?
Electrons are shared unequally, partial positive charge and partial negative charge
What is a non-polar molecule?
Equal sharing of electrons
Is it easier to remove an electron close to the nucleus or farther away?
Farther away, because there is less of an attraction
What are electron dot diagrams?
Symbol for the element surrounded by as many dots as there are in its outer shell energy levels
What kind of bond is water, H2O?
Which group forms covalent bonds?
What is a double bond?
When two pairs of electrons are involved in a covalent bond
Which group has a stable outer energy level?