Chemical Compounds: Formulas and Nomenclature
Oxides
- CaO | Calcium Oxide | Calcium Monoxide
- Cr2O3 | Chromium(III) Oxide | Dichromium Trioxide
- MnO2 | Manganese(IV) Oxide | Manganese Dioxide
- CO2 | Carbon Dioxide
- CO | Carbon Monoxide
- SO3 | Sulfur Trioxide
- ZnO | Zinc Oxide | Zinc Monoxide
- Au2O3 | Gold(III) Oxide | Digold Trioxide
- Sb2O5 | Antimony(V) Oxide | Diantimony Pentaoxide
- Li2O | Lithium Oxide | Dilithium Monoxide
- Cl2O7 | Chlorine(VII) Oxide | Dichlorine Heptaoxide
Binary Compounds of Hydrogen (Hydracids)
- AuH3 | Gold(III) Hydride | Gold Trihydride
- ZnH2
Metal Melting Furnaces and Die Casting: Types and Processes
Metal Melting Furnaces
A melting furnace is a device where either the combustion of a material or electric power is supplied to provide the heat needed to melt metal. The molten metal acquires the fluidity necessary for proper mold filling.
Furnace Classification:
- Cuba Oven: The metal is in contact with the fuel (e.g., blast furnace, cupola furnace).
- Hearth Furnace: The metal is in contact with exhaust gases (e.g., Martin Siemens oven, hearth oven).
- Controlled Atmosphere Furnace: No contact with fuel
Understanding Isomers, Alkynes, and Alcohols in Chemistry
Understanding Isomers, Alkynes, and Alcohols
Isomers are compounds that have the same condensed formula but differ in the way their atoms are arranged in the chain. Positional isomerism in alkenes is due to a change of position within the double bond chain.
Geometric isomerism, or cis-trans isomerism, occurs when the presence of a double bond prevents the free rotation of Carbon atoms. This results in different spatial arrangements, specifically cis (same side) and trans (opposite sides).
Optical isomerism,
Read MoreLearn Basic Spanish: Vocabulary and Grammar
Months of the Year
- January – Enero
- February – Febrero
- March – Marzo
- April – Abril
- May – Mayo
- June – Junio
- July – Julio
- August – Agosto
- September – Septiembre
- October – Octubre
- November – Noviembre
- December – Diciembre
Greetings
- Good morning – Buenos días
- Good afternoon – Buenas tardes
- Good evening – Buenas noches
Family Members
- Aunt – Tía
- Brother – Hermano
- Brother-in-law – Cuñado
- Children – Hijos
- Cousin – Primo/a
- Dad – Papá
- Daughter – Hija
- Daughter-in-law – Nuera
- Father – Padre
- Father-in-law – Suegro
- First-born – Primogénito
- Goddaughter
Chemical Bonds and Atomic Structure: Elements and Compounds
Matter: Mixtures, Pure Substances, Elements, and Compounds
Matter, when used as a composition, can be found in the form of mixtures or pure substances. A pure compound cannot be decomposed into simpler substances by physical changes. Compounds can be decomposed into other pure substances, called elements. Elements are simple substances and are not broken down into others. The units of matter are atoms. Elements are formed by the same type of atoms, and compounds are formed by combining atoms of different
Read MoreMaterial Properties and Applications: A Comprehensive Analysis
Understanding Materials: Properties and Applications
Materials are substances whose properties make them useful in structures, machines, production, devices, and everyday life. They are derived from raw materials and are subject to engineering processes, including waste and recycling.
The Role of the Engineer
Engineers must understand material properties to select the best materials for specific applications. Key properties include:
- Solubility
- Strength
- Stiffness
- Lightness (for vehicles)
- Friction (for bearings)