In an exothermic reaction, energy may be released to the surroundings in the form of

What is responsible for the vivid colors of many minerals and gemstones?

Sometimes, based on the electron configurations of the elements involved, a possible chemical formula for a compound can be predicted. Elements A ([core]ns2) and B ([core]ns2np5) react to form ionic compound AxBy.

Which statement is true about nuclear fusion? It is caused by the same process that causes nuclear fission. It does not occur naturally in the solar system. It has very low activation energy.

A car travelling at 20km per hour emits about 0.0750kg of carbon monoxide per kilometre. How many mole of carbon monoxide are emitted per kilometre under these conditions?

Imagine a 10 kg block moving with a velocity of 20/ms to the left calculate the kinetic energy of this block

What type of reaction is sodium reacting with chlorine

1. If temperature is increased, the number of collisions per second

1. Tonic Bonds are a. Formed when a metal and nonmetal transfer electrons b. Formed when a nonmetal and nonmetal share electrons Formed when a metal forms || bonds with other like atoms d. Formed when noble gases lose electrons

Why does the sun appear to be the brightest star in the sky? A - Its apparent brightness is much greater than other stars. B - It burns more gas, making it brighter than any other star.

What effect does nuclear radiation have on atoms? It splits atoms. It burns atoms. It ionizes atoms.