when atoms combine, interactions occur between their ___________
when electrons are shared, the type of bonding is called
the bonds that link many water molecules together to form a water group are_____
six electrons in its n. = 2 shell will become an ion with a charge of
the heat needed for chemical reaction to take place
u substance which helps a reaction to take place but does not take an active part is an
a catalyst for chemical reactions in biological system
The signed number telling how many electrons an atom will usualy recieve or lose
subatomic particles that lack an electrc charge
ID the type of chemical reaction: H (2)CO(3) to H(2)O + CO(2)
decomposition--one thing breaking down into 2 things
NH(3)+H(2)O to NH(4)OH
synthesis- two things into one
H(2)SO(4)+2kOH to k2so4+2H20
The four most abundant elements in the body are
Carbon, Hydrogen, Oxygen and Nitrogen
The type of chemical bond formed when oppositely charged ions attract each other is called
A compound which produces H+ions in solution is a
Neutrality on the pH scale
All organic molecules contain the
Substances which maintain a body's pH within narrow limits are called _____
The products and reactants of a versible reaction will form at the same rate when equilibrium is
what is expected when reactants break bonds?
an reaction occurs when a molecule is formed from the bonding of
atoms, ions or simpler molecules
an reaction occurs
when the bonds of the reactings compounds are broken and new combinations are formed
( true/False) a plant must supply energy through photosynthesis in order for its complex startch molecules to turn to simple sugar
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