____ uses your senses to gather data on/about something of interest

____ is your initial thought/explanation of the observations

____ gathers data under controlled conditions to evaluate the hypothesis

____ confirm, refute, and/or modify the hypothesis

Hypotheses which are confirmed by substantial independent testing may be elevated to a _____

A ______ is any ‘thing’ which plays a role in a phenomena

______ is the one variable whose type and/or value is set by the researcher and will be purposely changed to gather data for hypothesis

_____ is/are the outcome measurements of an experiment

There may be one or many dependent variables.

_____ are maintained at the same level across all subjects

Protons have a negative charge

Atomic number is the amount of

All atoms of same elements have same atomic #

Neutrons have a

_____ are the same mass as a proton

____ are located in the nucleus

Atomic weight =

Isotopes are different number of _____ than normal

____ have a negative charge

_____ are directly involved in chemical reactions

_____ determines the chemical property of an atom

______ is equal in number to the number of protons

1st shell around the nucleus holds 2 _____

After the first shell, the other shells hold _____

_____ results from the transfer of electrons

Atoms gain/lose control during

____ results in atoms with a charge

During ionic bonding, the charge difference hold the resulting molecule together

____ results from a sharing of electrons between two atoms

Each atom provides an electron during

The shared electron pair orbits both nuclei keeping the molecule together during

Larger nuclei will hog the shared electrons from smaller nuclei

____ are special and very weak

Hydrogen bonds are bonds between atoms

Bonds between molecules is/are

______ result from a ____ involving hydrogen

Electrons are shared equally in

___ are between the oxygen and hydrogen atoms in a single water molecule

_____ adds water to break a bond

____is the process by which starch is made from glucose

Water is a byproduct of

pH = 7

pH < 7

pH > 7

____ donate H+ ions from solutions

____ absorb OH- ions from solutions

____ can cause severe burns to skin

____ share electrons equally

_____ are formed when electrons are transferred from one atom to another

An atom that gives up an electron results in an ion with a _____ charge

An anion has a _____ charge

Large molecules are formed by the process of _____

An atom with two electrons in its outermost shell will most likely form a/an

A chemical which absorbs H+ ions will _____ the pH level

_____ come apart in water

If an atom gains an electron it will have a _____ charge