Chemistry Quiz 1 Flashcards
The elements or ingredients of something.
“Composition”
The smallest type of substance.
“Element”
An Attribute, Quality, or a Characteristic that can distinguish an object, there are many physical properties.
“Property”
Particles that consist of two or more atoms joined together.
“Molecules”
The emission of radiation and particles from atoms.
“Radioactivity”
The emission of high energy light from a radioactive atom.
“Gamma Radiation”
The emission of an electron from a radioactive atom.
“Beta Radiation”
The emission of a positively charged particle from a radioactive atom.
“Alpha Radiation”
Charges in an atom cancel out evenly at every position.
“Tomson’s Plum Pudding Model”
Particles smaller than an atom.
“Subatomic Particles”
A subatomic particle with neutral charge.
“Neutron”
A regular and predictable variation in a property across a series.
“Periodicity”
A column of the elements on the periodic table that goes vertical.
“Group”
A row on the periodic table that goes horizontal.
“Period”
Short-hand abbreviation for the elements name.
“Atomic Symbol”
The number of protons in the nucleus.
“Atomic Number”
The average mass of the atoms in the element.
“Atomic Weight”
The mass of one particular atom = to the number of protons + number of neutrons in the nucleus.
“Atomic Mass”
Atoms of the same element having a different number of neutrons.
“Isotopes”
Solid at room temperature, shiny, good conductors of heat and electricity, malleable, and ductile.
“Metals”
Are usually poor conductors of heat and electricity, not malleable or ductile. They vary from glasses, liquids, and solids at room temperature.
“Non-Metals”
In between metals and nonmetals.
Hydrogen, Carbin, Nitrogen, and Oxygen make up at least 95% of the mass of matter.
“Metalloids”
How much of an element is present on earth.
“Natural Abundance”
Half the width of an atom.
“Atomic Radius”
