Hello and welcome to Teach Kids Chemistry! Today, we will be exploring one of the most fascinating elements in the periodic table – gold. Gold is a precious metal that has been valued for its beauty and rarity for thousands of years. In this overview, we will learn about the properties of gold, its uses, and why it is so special. So, let’s dive in and discover the wonders of gold!
The Periodic Element Gold Overview
Gold is a chemical element with the symbol Au and atomic number 79. It has an atomic mass of 196.97 u. Gold has 79 protons and electrons, and its number of neutrons can vary from 104 to 118. It is a transition metal that belongs to group 11 and period 6 of the periodic table. Gold is a soft, dense, yellow metal that is highly valued for its beauty and rarity. It is a good conductor of electricity and does not tarnish or corrode easily. Gold is a metal and has an electronegativity of 2.54.The specific heat capacity of gold is 0.129 J/g·K, which means that it requires 0.129 joules of energy to raise the temperature of 1 gram of gold by 1 degree Kelvin. Gold has a melting point of 1,064 degrees Celsius and a boiling point of 2,807 degrees Celsius. Its density is 19.3 g/cm³, which makes it one of the densest elements. Gold is commonly used in jewelry, coins, and as a standard for monetary systems. It is also used in electronics, medicine, and as a catalyst in chemical reactions.
Everyday objects that contain the periodic element gold?
There are many everyday objects that contain chemicals or compounds that can be used to teach chemistry concepts. For example, water is a compound made up of two hydrogen atoms and one oxygen atom, and can be used to teach about chemical formulas and the properties of different elements. Salt, which is made up of sodium and chlorine, can be used to teach about ionic bonding and the properties of salts. Baking soda, which is sodium bicarbonate, can be used to teach about chemical reactions and the properties of acids and bases. Other examples include vinegar, which is acetic acid, and aspirin, which is acetylsalicylic acid. By using everyday objects that contain chemicals, students can learn about chemistry concepts in a simple and relatable way.
Differences in the periodic element gold across states of matter
The state of an element can vary greatly depending on its temperature and pressure. At standard temperature and pressure (STP), most elements are either solids or gases. Solids have a fixed shape and volume, while gases have neither. As temperature and pressure increase, some solids can become liquids, which have a fixed volume but take the shape of their container. As temperature and pressure continue to increase, some liquids can become gases, which have neither a fixed shape nor volume. At extremely high temperatures and pressures, some gases can become plasmas, which are highly ionized and conductive. Plasmas are often found in stars and lightning bolts, and have unique properties such as the ability to emit light.
Is the periodic element gold dangerous or radioactive?
Gold is not dangerous or radioactive. It is a stable and non-reactive element that is commonly used in jewelry, electronics, and other applications. Gold is not toxic and does not pose any health risks to humans or the environment. However, some compounds of gold can be toxic and should be handled with care. Overall, gold is a safe and valuable element that has been used by humans for thousands of years.
Is the periodic element gold rare and expensive?
Yes, gold is considered a rare and expensive element. It is a precious metal that has been highly valued throughout history for its beauty and rarity. Gold is relatively scarce in the Earth’s crust and is difficult to extract from the ground, which contributes to its high cost. Additionally, gold has many practical uses in industries such as electronics, jewelry, and medicine, which further drives up its demand and price. However, despite its high cost, gold remains a popular investment and store of value due to its stability and perceived worth.
Learn about all the elements with a periodic table!