Periodic Table Flashcards
(56 cards)
Define ‘atom’
An atom is the smallest particle of an element that can exist on its own and still have the chemical properties of thayt element
Define ‘element’
An element is a pure substance made up of one type of atom
Some elements exist as single atoms, give examples of these elements
Carbon, Gold, Iron, and Copper
Some elements exist as molecules, give some examples of these elements
Oxygen, Nitrogen, Hydrogen, and Chlorine
define ‘compound’
Compounds are made up of 2 or more different atoms/elements
Give four examples of compounds
Carbon Dioxide (CO2), Water H2O), Sodium Chloride (NaCl), and Carbon Monoxide (CO)
Define ‘molecules’
Molecules are a group of atoms banded together representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Elements of the periodic table from 1-20
Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminum, Silicone, , Phosphorus, Sulfur, Chlorine, Argon, Potassium, calcium
Symbol for hydrogen
H
Which of the elements are the lightest?
hydrogen
Which element is mostly used in petroleum refining and fertilizer production?
hydrogen
What is the mass number for hydrogen?
1.008
Which element is commonly found in the sun and most of the stars?
Hydrogen
What group of elements does hydrogen fall under ?
Group 1A alkali metals
Name two of the inert gases on the periodic table
helium and argon
Which is the second lightest element on the periodic table?
helium
Helium becomes liquid at what temperature?
268.9 degrees Celsius / -452 degrees Fahrenheit
Chemical symbol for helium?
He
What is the most familiar use of helium
to fill party and parade balloons
Mass number for helium?
4.003
What group can helium be found in?
Group 8A (noble/inert gases)
Define lithium
a soft silver-white metal.
Which element is the lightest of the alkali metals?
lithium
Chemical symbol for lithium?
Li
