Science Vocab 1
A small, negatively charged particle in an atom, found outside the nucleus
What is an electron?
Elements to the left of the metalloids on the periodic table; conductive, malleable and shiny
What are metals?
The smallest particle of matter that still has the properties of the element that makes up the matter
What is an atom?
A pure substance composed entirely of the same type of atom, represented by a symbol on the periodic table.
What is an element?
Having properties of both metals and non-metals
Smallest particle of a compound that still has the properties of that compound; has atoms bonded together in the ratio given by the compound's formula
What is a molecule?
An atom with a positive charge as a result of having lost electrons
What is a cation?
What is nuclear force?
An atom with a negative charge as a result of having gained electrons
What is an anion?
What are non-metals?
A positive particle in an atom, found in the nucleus
What is a proton?
Central part of the atom; contains most of the atom's mass, as protons and electrons
What is the nucleus?
Attractive force between atoms sharing two electrons
A molecule in which the electrons are unequally through covalent bonds, producing a slightly positive and negative poles
What is polar?
A pure substance made by chemically bonding atoms in fixed ratios
What is a compound?
A neutral particle in an atom, found inside the nucleus
What is a neutron?
Attraction between positive and negative charges of cations and anions
Pairs of electrons in the outermost level of an atom that are not shared in a covalent bond with another atom
What are unshared electrons?
Arrangement of the elements in order by number of protons in rows and columns, with each column of elements having similar properties
What is the periodic table of elements?
Attractive force between atoms as a result of electrons transferring from one to the other
What is an ionic bond?
A molecule in which the electrons are shared equally through covalent bonds
What is non-polar?
Representation of the ratio of elements in a compound, using the element symbols and numerical subscripts
What is the chemical formula?
When elements are arranged in order by number of protons, groups with similar properties occur periodically (such as every 8 elements)
What is the Periodic Law?
A covalent bond in which four electrons are shared
What is a double bond?
Attractive force between atoms in a compound, formed by transferring or sharing electrons
What is a chemical bond?