strontium
Definition
Strontium is a chemical element with the atomic number 38. It is a soft, silvery-white metal that is found in nature as a mixture of isotopes. Strontium is a member of the alkaline earth metals, and it is similar to calcium in its chemical properties.
The atomic mass of strontium is 87.62. It has a melting point of 769 degrees Celsius and a boiling point of 1384 degrees Celsius. Strontium is a relatively reactive metal, and it reacts with water to form strontium hydroxide.
Strontium is found in small amounts in the Earth's crust. It is most abundant in the minerals celestite and strontianite. Strontium is also found in some rocks and soils.
Strontium is used in a variety of applications, including:
- Fireworks: Strontium is used to create the red colour in fireworks.
- Glassmaking: Strontium is used to make glass that is more heat-resistant and has a higher melting point.
- Pigments: Strontium is used to make pigments that are red, yellow, and orange.
- Medicine: Strontium is being investigated as a possible treatment for osteoporosis.
Strontium is a relatively safe element, but it can be harmful if ingested in large amounts. It can also cause skin irritation if it comes into contact with the skin.
How can the word be used?
The patient was given a strontium supplement to help treat their bone disease.
Different forms of the word
Noun: strontium.
Plural: strontiums.
Etymology
The word "strontium" comes from the Latin word "Strontian", which is the name of a village in Scotland where the element was first discovered. It was first used in English in the 1800s.
There are no other forms of the word "strontium".
The etymology of the word "strontium" is interesting because it shows how the element was named after the place where it was first discovered. This is a common practice in chemistry, as many elements are named after the places where they were first found.
Question
What is strontium used for?
AQA Science Exam Question and Answer
Question:
Explain the role of strontium in fireworks and its effect on flame colour. Discuss the connection between strontium ions and the emission of red light in pyrotechnic displays.
Answer:
Strontium plays a significant role in the vibrant colours of fireworks. When strontium compounds are introduced into fireworks compositions, they impart a distinctive red hue to the flames. This phenomenon is a result of the interaction between strontium ions and the energy released during combustion.
During a fireworks display, strontium-containing compounds are ignited, releasing energy in the form of heat and light. The excitation of strontium ions occurs as they absorb this energy. As the excited ions return to their lower energy states, they emit photons of light. In the case of strontium, this emitted light falls within the red region of the electromagnetic spectrum.
The specific colour emitted by strontium ions is a consequence of its unique electron configuration and the energy levels involved in the transition. The intense red light produced by strontium compounds is a hallmark of many pyrotechnic shows, creating stunning visual displays that captivate audiences during celebratory events.