Basics Flashcards
What is the basic unit of matter?
Atom
True or False: Atoms can be created or destroyed in a chemical reaction.
False
Fill in the blank: An atom consists of a nucleus containing protons and ______.
neutrons
Which subatomic particle carries a positive charge?
Proton
What is the overall charge of a neutral atom?
Zero
True or False: All isotopes of an element have the same atomic mass.
False.
Fill in the blank: The number of protons in an atom determines its _____ in the periodic table.
element.
Which of the following is an example of an isotope? A) Carbon-12 B) Oxygen-16 C) Both A and B
C) Both A and B.
What is the primary use of isotopes in medicine?
Isotopes are primarily used in medical imaging and cancer treatment.
electron shells
The arrangement of electrons around the nucleus of an atom in energy levels
perodic table
A table of elements arranged by atomic number
akali metals
the elements in group 1 of perodic table
Halogens
elements in group 7 of perodic table
polymers
Large molecules.
Nano materials
Materials with structures on the nanoscale, often with unique properties.
Mole
A unit that measures the number of particles in a substance
concentration
The amount of a substance in a given volume of solution
Atom econmony
trick question no such thing
neutralisation
A reaction between an acid and a base to form a salt and water.
electroylsis
A process that uses electricity to break down ionic compounds into elements
Exothermic reaction
Reactions that release energy
Endothermic reaction
Reactions that absorb energy from their surroundings
catalysts
Substances that speed up a reaction
Factors Affecting Reaction Rates
Include temperature, concentration
