science 1 Flashcards
(35 cards)
What is the Independent Variable?
The Variable that is change or manipulated.
What is Control?
Used for comparison (stays the same)
What is the Dependent?
Result of what was changed.
When you observe/collect data?
Use a data table
What do you do when you analyze Data?
Use a graph.
what is Atom?
A building block for any and all matter.
what is an atom composed of?
Protons,Neutrons, Elctrons
Atomic # is?
of protons
what is the atomic Weight?
of neutrons
what is Malleable?
Bendable, can be shaped.
what is ducktile?
Being able to be stretched into a thin wire.
Noble Gases are not?
Reaction they are stable
how many valence electrons can level one hold?
2
how many valence electrons do energy level 2 hold?
8 valence electrons
how many valence electrons do energy level 3 hold?
8 valence electrons
what are Valence electrons?
electrons in the last energy level
how do ions form?
when an atom loses a negative charge and becomes a positive charge or when an atom gains a negative charge and becomes a negative
how do you name ionic compounds?
the name of the positive ion comes first followed by the name of the negative
how is ionic crystal formed?
when you have equal #’s of positive and negative charge.
do Ionic bonds have electrical conductivity?
yes, because they are ducktile
what is covalent bond?
when two atoms share electrons
What is a double bond?
two atoms share two pairs of electrons.
what is a polar bond?
a covalent bond in which electrons are shared unequally
what is a non polar bond?
covalent bond in which electrons are shared equally
