Chapter 2 Flashcards
the attraction between water molecules is
ca
What uses ca
hydrogen bonds
Glycogen is a
carbohydrate
starch are
carbohydrates
carbohydrates store
energy
What reduces the activation energy of chemical reactions?
enzymes
What increases the speed of chemical reactions?
enzymes
Enzymes usually are?
proteins
ability of water to form drop is a example of
cohesion
What makes up a atom?
protons, electrons and neutrons
How is an atom called an ion
loses or gains electrons
How is something neural
must have the same number of electrons and neutrons
Why do atoms bond?
to be stable
How is a molecule formed?
atoms are held together by covalent bonds
Ion bond will only occur
have both + and - charges
element that is a pure substance has only one kind of
atom
What dissolves more hydrogen ion in water form
acid
What dissolves in less hydrogen ions in water form
base
What stores energy in lipids?
organisms
What is ATP?
Where energy in molecules is stored temporarily
What is nucleotides?
subunits of nucleic acids
Which is associated with carbohydrates?
monosaccharide, cellulose, lipid
monosaccharide, glycogen, lipid
monosaccharide, gylcogen, lipid
Extra sugar in plants is stored as?
starch
What is hydrogen bond?
a weak attraction between polar molecules
What do atoms do in covalent bond?
share electrons
Why do ionic compounds dissolve in water?
Water molecules have partially charged ends that interact with ions
