Chemistry Symbols and Formulas Flashcards
A handful of elements have been known since ancient times. Their symbols are based on what language?
Latin
In the periodic table, the symbol ‘S’ is used for silicon and the symbol ‘Si’ is used for silver.
False
The chemical symbols for radon, copper, and iron are _____, _____, and _____ respectively.
Rn, Cu, Fe
Name the elements in the chemical formula KCN
Potassium, carbon and nitrogen
Name the elements in the chemical formula. PF5
Phosphorus and Fluorine
A one- or two-letter designation of an element is named as a chemical ____
symbol
A chemical ____ is a set of chemical symbols that indicate the elements in a compound and the relative proportions of those elements.
formula
How many hydrogen atoms are in one molecule of the compound C12H22O11?
22
Chemical symbol ‘Ag’ is used for which of the following elements?
Silver
The numbers written after each chemical symbol in a formula are called subscripts. The subscript of hydrogen in H3PO4 is 3. The subscript for phosphorus is assumed to be 1 because no subscript is shown. Ethanol is a compound that consists of carbon, hydrogen, and oxygen in a 2:6:1 ratio. What is the correct chemical formula (with subscripts) for ethanol?
CH6O2
c2h6o
Name the elements in the chemical formula. NiSO4
Nickel, Sulfur, Oxygen
Name the elements in the chemical formula. CaCl2
Calcium and Chlorine
“Zi” is the chemical symbol for zinc.
false
Abbreviations called chemical symbols are used to represent the elements.
True
The chemical symbol for arsenic is ‘As’.
true
