Worksheets2.1-2.2 Chemistry of Life Quiz
Total questions: 34
Worksheet time: 17mins
The basic unit of matter
atoms
protons
neutrons
electrons
positively charged
covalent bond
electrons
protons
neutrons
don't have a charge
electrons
protons
neutrons
hydrogen
negatively charged
electrons
neutrons
protons
atoms
a pure substance that consists of entirely one type of atom
element
atom
hydrogen bond
covalent bond
atoms of the same element that differ in the number of neutrons are called
isotopes
atoms
element
matter
a substance formed by the chemical combination of two or more elements in definite proportions
hydrogen bond
covalent bond
compound
ionic bond
charged atoms are called
matter
ions
electrons
protons
an ionic bond is formed when
one or more electrons are transferred from one atom to another
elements share electrons
an atom loses electrons
an atom gains electrons
what is the atomic number?
8
15.99
2
4
what is the atomic mass?
8
4
6
15.999
how do you get the atomic mass?
protons + neutrons
protons - electrons
protons + electrons
neutrons - protons
how do you get the atomic number
number of protons in the nucleus
protons + neutrons
all of the atoms added together
number of neutrons in the nucleus
bond formed when electrons are shared by atoms
ionic bond
hydrogen bond
covalent bond
matter
the smallest unit of most compounds formed by covalent bonds
atom
molecules
matter
proton
occurs when a slight attraction between close molecules developed between charged regions near molecules
Law of Gravity
Physics
Van Der Waals Forces
Law of the Conservation of Energy
water molecules are
polar
non-polar
atomic
radioactive
when there is an attraction between a hydrogen atom with a partial positive charge and another atom with a partial negative charge
energy field
ionic bonding
covalent bonding
hydrogen bonding
an attraction between molecules of the same substance
adhesion
cohesion
capillary action
ionic bond
why can some bugs walk on water?
cohesion through surface tension
adhesion through surface tension
capillary action
hydrogen bonding
attraction between molecules of a different substance
capillary action
cohesion
adhesion
ionic bond
capillary action is when
plants pull water through the roots to the stems and leaves
bugs use surface tension to walk on water
adhesion through surface tension
the cohesion of water molecules
the amount of heat energy required to increase temperature
force
energy
heat capacity
kelvin
material composed of two or more elements or compounds that are physically mixed together but not chemically combined
solution
mixture
solvent
dissolvent
type of mixture where all components are evenly dispersed
solute
suspension
mixture
solution
the substance that is dissolved in a solution
mixture
suspension
solvent
solute
substance doing the dissolving
solvent
solute
solution
suspension
a mixture of water and a non-dissolved material
solution
suspension
mixture
solvent
contains more hydroxide ions than hydrogen ions
basic/alkaline
acidic
neutral
ionic
contains more hydrogen ions than hydroxide ions
neutral
basic/alkaline
covalent
acidic
what are two acidic substances?
battery acid and lemon juice
milk and blood
stomach acid and soap
dry cleaner and bleach
what are two basic/alkaline substances?
battery acid and stomach acid
coffee and tomatoes
baking soda and blood
bleach and soap
weak acids or bases that can react with strong acids or bases to prevent sharp, sudden change
Alkaline
Buffers
Solution
Suspension
controlling pH is important for maintaining...
capillary action
energy
Homeostasis
heat capacity
