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Index
»
SCIENCE
»
Chapter 1
»
Level 1
level: Level 1
Questions and Answers List
level questions: Level 1
Question
Answer
Energy required to remove an electron
Ionization Energy
Ability to lose electron
Metallic property
Ability to gain electron
Non metallic
Transfer of electron
Ionic bonding
a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory.
Neils Bohr
British physicist who came to be known as the father of nuclear physics.
Ernest Rutherford
an American physical chemist and a former Dean of the College of Chemistry at University of California
Gilbert Newton Lewis
out most energy level of an atom and the electrons in it.
Valence shell
structure consists of the chemical symbol of an element surrounded by dots
Lewis electron dot structure ( LEDS )
type of chemical bond where there is a complete transfer of electrons between atoms.
Ionic bonding
another type of chemical bonding that involves sharing of electrons between atoms.
covalent bonding
unequal sharing of electrons between two atoms ( one atom has typically negative charge and the other atom has a positive charge )
polar covalent bonds
equal sharing of electrons between two atoms
non-polar covalent bonds
Type of bond: Non-polar covalent
Electronegativity difference: 0.0-0.4
Type of bond: Polar covalent
Electronegativity difference: 0.5-1.9
Type of bond: Ionic Bond
Electronegativity difference: 2.0-4.0
-groups of atoms that confer specific properties to a molecule.
functional group
- organic compounds containing carbon and hydrogen
Hydrocarbons
developed a systematic method of naming different organic compounds
International Union of Pure and Applied Chemistry (IUPAC)
-consists of the chemical symbols for the elements followed by numeric subscripts describing the number of atoms of each molecule.
Molecular formula
show the order of atoms that are written in a single line to save space and make it more convenient and faster to write out
Condensed formula
consists of hydrogen and carbon atoms arranged in a structure in which all the carbon–carbon bonds are single
Alkane
- hydrocarbon that contains a carbon–carbon double bond
Alkene
Organic molecules made of the functional group carbon-carbon triple bonds
Alkyne
organic compound with an -OH group called hydroxyl
Alcohol
carbonyl group which is bonded to double bond O & one H & R group
Aldehydes
double bond O is located inside the parent chain
Ketone
have one or more hydrogen atoms bond with Nitrogen
Amines
carbonyl group with double bond O and Nitrogen
Amides
-molecules that contain hydrocarbons|make up the building blocks of the structure and function of living cells| function as energy-storage molecules & chemical messengers.
Lipids
highly complex substance that is present in all living organisms| responsible for the structure in different organelles.
Proteins
–sugars = energy| starches and fibers found in fruits, grains, vegetables and milk products.
Carbohydrates
0rganic chemical of complex molecular structure that is found in all prokaryotic and eukaryotic cells and in many viruses | codes genetic information for the transmission of inherited traits.
DNA