When naming molecular compounds prefixes are used to dictate the
number
of a given element present in the compound. ” mono-” indicates one, “di-” indicates two, “tri-” is three, “tetra-” is four, “penta-” is five, and “hexa-” is six, “hepta-” is seven, “octo-” is eight, “nona-” is nine, and “deca” is ten.
How do you pronounce chemical equations?
When naming molecular compounds prefixes are used to dictate the
number
of a given element present in the compound. ” mono-” indicates one, “di-” indicates two, “tri-” is three, “tetra-” is four, “penta-” is five, and “hexa-” is six, “hepta-” is seven, “octo-” is eight, “nona-” is nine, and “deca” is ten.
How do you read and understand chemical reactions?
Four basic types
Representation of four basic chemical reactions types:
synthesis, decomposition, single replacement and double replacement
.
What are the rules for writing chemical equations?
- In a chemical equation, the reactants are written on the left, and the products are written on the right.
- The coefficients next to the symbols of entities indicate the number of moles of a substance produced or used in the chemical reaction.
How do you break down chemical formulas?
- To write the chemical formula of a binary compound.
- Determine the valencies of the two elements present.
- Write the chemical formula such that the sums of the valencies of the two elements are equal. …
- If a metal is present, always place it first in the formula.
What information is not given in a chemical equation?
Answer: Symbols and formulae of all the substances involved in a particular reaction.
Number of atoms/molecules of the reactants and products formed
. Whether a particular reaction is actually feasible or not.
Is chemical formula of?
The formula of a compound—such as CH
4
—indicates the types of atoms present, with subscripts representing the relative numbers of atoms (although the numeral 1 is never written). A water molecule is made up of two hydrogen atoms and one oxygen atom.
What are some common chemical formulas?
| Common used name, trade names Chemical Name Chemical Formula | calcium chloride calcium chloride CaCl 2 | carbide calcium carbide CaC 2 | carbolic acid phenol C 6 H 5 OH | carbon dioxide carbon dioxide CO 2 |
|---|
What is the chemical formula of gypsum?
2.2 Setting Reaction of Calcium Sulfate. Gypsum is the name given to a mineral categorized as calcium sulfate mineral, and its chemical formula is calcium sulfate dihydrate,
CaSO
4
⋅ 2H
2
O
.
What information does a chemical equation convey?
A balanced chemical equation gives
the identity of the reactants and the products as well as the accurate number of molecules or moles of each that are consumed or produced
.
What does a chemical equation show?
A chemical equation is an expression of the net composition change associated with a chemical reaction. It shows
how a certain amount of reactants yields a certain amount of products
.
What does the chemical equation represent?
A chemical equation is the
symbolic representation of a chemical reaction
. The reactants (the starting substances) are written on the left, and the products (the substances found in the chemical reaction) are written on the right.
How do you read a chemical formula in English?
Reactants are converted to products, and the process is symbolized by a chemical equation. For example, iron (Fe) and sulfur (S) combine to form iron sulfide (FeS).
Fe(s) + S(s) → FeS
(s) The plus sign indicates that iron reacts with sulfur.
What is the chemical formula of water?
Although its formula (
H
2
O
) seems simple, water exhibits very complex chemical and physical properties. For example, its melting point, 0 °C (32 °F), and boiling point, 100 °C (212 °F), are much higher than would be expected by comparison with analogous compounds, such as hydrogen sulfide and ammonia.
What are the 5 types of chemical equations?
The five basic types of chemical reactions are
combination, decomposition, single-replacement, double-replacement, and combustion
. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories. Some reactions will fit into more than one category.
