BTEC Applied Science: Unit 4 Learning aim A
covalent bond - ANSWER A chemical bond that involves sharing a pair of electrons
between atoms in a molecule between two non-metals
Ionic Bond - ANSWER Formed when one or more electrons are transferred from one
atom to another between an metal and non-metal
Metalic bond - ANSWER the chemical bonds that bind atoms together in a metal
Wave speed equation - ANSWER wave speed = frequency x wavelength
Critical angle equation - ANSWER Sin c=1/refractive index
Refractive index equation - ANSWER Speed of light in a vacuum/Speed of light in
the medium = sin i/ sin r
What is an axon? - ANSWER the long threadlike part of a nerve cell along which
impulses are conducted from the cell body to other cells.
Nuerons - ANSWER a nerve cell; the basic building block of the nervous system
What is the palisade layer? - ANSWER A tissue made of elongated cells, each
containing hundreds of chloroplasts, and is the main site of photosynthesis.
Alveoli - ANSWER air sacs in the lungs
Atomic Structure of Carbon - ANSWER
reactivity of group 1 - ANSWER More reactive as you go down the group
reactivity of group 7 - ANSWER decreases as you go down the group
converging lens - ANSWER lens such that a beam of light passing through it is
brought to a point or focus
convex lens - ANSWER a lens that is thicker in the center than at the edges
what is a permanent dipole - ANSWER A small charge difference across a bond that
results from a difference in the electronegativities of the bonded atoms
types of tissues - ANSWER epithelial, connective, muscular, nervous
slow twitch fibers - ANSWER muscle fibers that contract at a slow rate and have very
good endurance
covalent bond - ANSWER A chemical bond that involves sharing a pair of electrons
between atoms in a molecule between two non-metals
Ionic Bond - ANSWER Formed when one or more electrons are transferred from one
atom to another between an metal and non-metal
Metalic bond - ANSWER the chemical bonds that bind atoms together in a metal
Wave speed equation - ANSWER wave speed = frequency x wavelength
Critical angle equation - ANSWER Sin c=1/refractive index
Refractive index equation - ANSWER Speed of light in a vacuum/Speed of light in
the medium = sin i/ sin r
What is an axon? - ANSWER the long threadlike part of a nerve cell along which
impulses are conducted from the cell body to other cells.
Nuerons - ANSWER a nerve cell; the basic building block of the nervous system
What is the palisade layer? - ANSWER A tissue made of elongated cells, each
containing hundreds of chloroplasts, and is the main site of photosynthesis.
Alveoli - ANSWER air sacs in the lungs
Atomic Structure of Carbon - ANSWER
reactivity of group 1 - ANSWER More reactive as you go down the group
reactivity of group 7 - ANSWER decreases as you go down the group
converging lens - ANSWER lens such that a beam of light passing through it is
brought to a point or focus
convex lens - ANSWER a lens that is thicker in the center than at the edges
what is a permanent dipole - ANSWER A small charge difference across a bond that
results from a difference in the electronegativities of the bonded atoms
types of tissues - ANSWER epithelial, connective, muscular, nervous
slow twitch fibers - ANSWER muscle fibers that contract at a slow rate and have very
good endurance
