strontium

«strontium» in Mova's school dictionary: a soft, silvery metal, a chemical element with the symbol… — its meaning for a pupil, its sense in the lessons and examples, with 2 sentences of Mova's corpora that use it.

part of speech

noun (strontium, uncountable)

meaning for a pupil

1) Strontium is a soft, silvery metal, a chemical element with the symbol Sr and atomic number 38. tree →

2) Strontium compounds give fireworks and flares a bright red colour. tree →

sense in the lessons

In science lessons on elements and the periodic table it is in the same group as calcium and magnesium. Fireworks are a fun example: strontium makes red, copper makes blue, barium makes green, sodium makes yellow. It is named after Strontian, a village in Scotland where it was found. A radioactive kind, strontium-90, is dangerous and was released by nuclear tests and accidents. Phrases: «strontium salts», «strontium-90».

examples

• Strontium makes fireworks burn bright red. tree →
• The symbol for strontium is Sr. tree →
• Strontium was named after a village in Scotland. tree →
• Strontium is a metal in the same group as calcium. tree →
• Red emergency flares contain strontium. tree →
• Strontium-90 is a dangerous radioactive form. tree →

note

Uncountable. Said «STRON-tee-um» or «STRON-shum». Chemical symbol Sr with a small r. Ordinary strontium is not radioactive; only some kinds (isotopes) are.

In the corpora

• Every kind of metal gives back its own colour: strontium red, barium green, sodium yellow, copper blue.
• The colours of fireworks come from different metals: strontium gives red, barium green, sodium yellow and copper blue.

Trees and pragmatics

Every meaning and example of «strontium» parsed by Mova, each sentence with its dependency tree and frames.