science 3

This refers to the small numbers written after a symbol

Subscript

The definition of a subscription is;

It is the number of atoms

Coefficient is the:

Quantity of a substance

What is one fact about a subscript?

You cannot touch or change it

This refers to the symbol that are the numbers written before a formula

Coefficient

These indicate quantities and properties within the formulas

Mathematical and Structure Notations

These are typically placed above, below, or alongside the reaction arrow to specific the external factors driving the reaction

Reaction Condition symbol

What is the other term for a triangle?

Heat

What is the symbol for the example

A

—>

Triangle or heat

What is the purpose of a catalyst in reactions?

It is added to speed up the reaction

Specific pressure required

Pressure

This si when the oxygen combines with a hydrocarbon (compound containing hydrogen and Carbo to form water and carbon dioxide

Combustion (burning) reaction

General formula for Combustion Reaction?

C⁴H¹⁰+0²→CO²+H²O

Metal carbonates contain

CO³

Metal hydroxide contain?

OH

Metal oxides contain?

O

What is the symbol of the example;

5 atom

—>

Pressure

Specific temperature required

Temperature

What kind of symbol is the example:

100°C

—>

Temp

Physical state symbols refer to?

These denoted the physical condition or phase of the elements and compounds in the reactions

The symbol (S) refers to?

Solid

The symbol (l) refers to?

Liquid

The symbol (g) refers to?

Gas

The symbol (aq) refers to?

Aqueous

These symbols describe how substances interact and direction in which the reaction proceeds:

Reaction Direction and Seperation Symbols

—>

yields

Separates reactants from products

Yields

<—>

Reversible reaction

Proceeds in both forward and backward directions

Reversible reaction

What is the reversible reaction symbol often used in?

Dynamic eqceilibra

+

Plus

Separates multiple reactants or products

Plus

4 informations that a chemical equation gives?

A. Reaction Direction and separation Symbols

B. Physical State Symbols

C. Reaction Condition Symbols

D. Mathematical and Structural Notations

A chemical equation identifies:

•The starting materials and the results

•The physical state of the substances

○The conditions required for the reaction to occur

CaCO is?

Calcium carbonate

What is Calcium carbonate?

An agricultural lime

What is NH⁴OH?

Ammonium Hydroxide

Bee stings are?

Acidic

Wasp stings are?

Alkaline

A reaction when 2 or more reactants combine to form a single product

Combination/Synthesis reaction

Example of Combination (synthesis) reaction?

A+B→AB

In this reaction, a single reactant breaks down into simpler ones

Decomposition Reaction

This is the reverse of Combinatoon reaction

Decomposition Reaction

Example of decomposition reaction?

AB→A+B

This is when one element replaces another element from a compound. The more active element takes the place of the less active element in a compound

Single displacement Reaction

General formula for Single Displacement?

A+BC→AC+B

General formula for Double displacement?

AB+CD→AD+CB

This si when oxygen combines with a hydrocarbon compound (

This is when the positive ions and negative ions of different compounds switch places, forming two entirely different compounds

Double displacement Reaction