What are the basic terms of chemistry?
BASIC CHEMISTRY DEFINITIONS
- 1) Matter. anything that occupies space and has mass. (
- = 2,237.287 tons. 2) Element.
- 3) Atom. It means “unable to cut…”
- It is the basic unit of matter (simplest part of an element that retains the properties of that element.) Current Atomic Theory.
- 4) nucleus.
- 5) protons.
- 6) neutron.
- 7) electrons.
What is a chemical change dictionary?
Chemistry. a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance: The formation of rust on iron is a chemical change.
What is the meaning of chemical in dictionary?
Definition of chemical (Entry 1 of 2) 1 : of, relating to, used in, or produced by chemistry or the phenomena of chemistry chemical reactions. 2a : acting or operated or produced by chemicals a chemical fire extinguisher. b : detectable by chemical means. chemical.
What word is similar to chemistry?
Chemistry synonyms
- chemical science. the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
- interpersonal chemistry.
- biogeochemistry.
- thermochemistry.
- alchemy.
- theoretical-chemistry (related)
- biochemistry (related)
- physics (related)
What is a and Z in chemistry?
Atomic Definitions Z is used to signify the atomic number or proton number of an atom. Z = # of protons of an atom. A is used to signify the atomic mass number (also known as atomic mass or atomic weight) of an atom. A = # protons + # neutrons.
What are 4 examples of chemical changes?
Chemical Change Examples
- Combustion.
- Oxidation (rusting)
- Decomposition or fermentation.
- Cooking an egg.
- Photosynthesis.
- Reacting acids and bases together.
- Chemical batteries.
- Digestion.
What is the meaning of chemical in Oxford dictionary?
noun. /ˈkemɪkl/ /ˈkemɪkl/ a substance obtained by or used in a chemical process.