what chemical compounds are responsible for the colors of fireworks

Before the Declaration of Independence was even signed, founding father John Adams once wrote to his wife that he envisioned a celebration of America's independence from Great Britain with "Illuminations from one End of this Continent to the other from this Time forward forever more."

What is ballot harvesting — and should you hand your ballot to a stranger? The bright, colorful part of the fireworks display is caused by “excited” electrons in the atoms of different metal and salt compounds.

Scott Pelley speaks with voters there to understand how they feel about the race between Biden and Trump. Copyright © 2020 CBS Interactive Inc. All rights reserved. SCIENCE AT HOME: Get the science resources, tools, tips & lessons you need during quarantine!SCIENCE AT HOME: Free resources. Here we take a brief look at some of the ways in which pyrotechnic chemists give fireworks their characteristic bangs and screeches. "Without chemistry, you couldn't have the burning mixtures. Just place your order while logged in to your Home Science Tools account and you'll automatically earn up to 6% back when your order ships! They release light energy (photons) in the process. Calcium burns red-colored and potassium burns purple.

Different metals burn in different colors. The pandemic has hurt most professional sports, but it's done wonders for one game: chess! In fireworks, metals are combined to create different colors. Trump crowd chants "fire Fauci" while Biden campaigns in Pennsylvania, Longtime GOP stronghold Arizona in play for both Biden and Trump, Battleground Tracker: Biden leads, Trump needs Election Day surge, Eddie Hassell, "The Kids Are All Right" actor, killed in Texas, At least 19 killed in latest attack on an Afghan university, Johnny Depp loses libel case against tabloid's "wife-beater" story, "Devastating" Hurricane Eta heading for Central America, FBI investigating after Biden bus surrounded by Trump supporters, Battleground Tracker: Latest polls, state of the race and more, 5 things to know about CBS News' 2020 Battleground Tracker, CBS News coverage of voting rights issues. Discussion on the chemistry of fireworks usually centres on the compounds used to generate their array of colours, but there’s a whole lot of chemistry behind the sounds they make too. But what, exactly, makes up the explosive chemical reactions that create the displays of colors and shapes? Forecasters say late-season storm likely to bring 115 mph winds and as much as almost three feet of rain to some spots in Nicaragua.

Fireworks involve a chemistry composition that combines an oxidizer with a fuel. In Miami, Mr. Trump said about Dr. Anthony Fauci, the nation's leading infectious disease expert, "don't tell anybody but let me wait till a little bit after the election.". A look back at the esteemed personalities who've left us this year, who'd touched us with their innovation, creativity and humanity.

Chlorophyll is the chemical compound responsible for the usual, green colouration of most leaves. The heat of the metal determines the color of the sparks. Below is the combination of metals and salts to produce different colors of the fireworks: Red: strontium and lithium salts; Orange: calcium salts; Yellow: sodium compounds

Election Day could turn into "Election Week" with rise in mail ballots. When the star compounds inside a firework are heated, the excited atoms give off light energy. The American Kennel Club has released its latest list of the nation's most beloved breeds. These pyrotechnic shows are actually the result of carefully crafted chemical reactions. U.K. High Court judge says ex-wife Amber Heard's accusations that Depp was violent were "proved to the civil standard" in court, but Depp's lawyers plan to appeal. When a nursing facility outside Seattle found itself in the middle of the first known U.S. outbreak of COVID-19, the response was hampered by a lack of viable tests and a federal inspection that diverted time away from patient care. This light falls into two categories: incandescence and luminescence. Chemicals are also responsible for creating the colors seen in a fireworks display: copper oxide (blue), strontium chloride (red), sodium silicate (yellow) and barium acetate (green). Correspondent Conor Knighton reports. One of the key ingredients for firecrackers, ground fireworks, and aerial fireworks (ones which explode in the sky) is black powder. The colors of fireworks are largely the result of the burning of tiny particles of metallic elements. If you are 13 years old when were you born? This works much like the flame test, a method used to identify a substance by its color in a flame. At this year's Macy's Fourth of July fireworks spectacular in New York City, professionals from PyroSpectaculars by Souza plan to set off 1,600 shells per minute over the course of the 25 minute show. Scientists at Washington State University's Bear Research, Education and Conservation Center are studying what goes on before, during and after grizzly bears hibernate over the winter months. John Dickerson reports on how the state has gone from an easy GOP win to a toss-up between Biden and Trump. This chemical is contained within chloroplasts in the leaf cells, and is an essential component of the photosynthesis process via which plants use energy from … Battleground Tracker: Biden leads, Trump needs Election Day surge to win, CBS News/BET poll: Black voters motivated, but concerned about votes counting, The pivotal post-Election Day dates you need to know, A behind-the-scenes look at how mail-in ballots are processed. CBS News chief Washington correspondent Major Garrett looks at the dramatic history of concessions, and examines why a losing candidate stepping aside is what allows our country to move forward.

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