A. Flueorescece. <span>The light from these ultraviolet lamps reacts with the chemicals of a mineral and causes the mineral to glow.
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Answer: Valence electron
Explanation:
The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements.
Answer:
A
Explanation:
When the particles where shot through gold foil, he found that most of the particles went through. Some scattered in various directions, and a few were even deflected back towards the source.
Answer:
Most substances on earth are compounds and most interesting chemistry is done with compounds. Most interesting chemistry is done with mixtures of compounds although they often start with pure compounds and then do reactions as mixtures. Most chemistry is carried out in liquid solutions made up of compounds that are solids, liquids, or gases in their pure form.
Explanation:
The equation that is represented by the model is = x²-2x-3=(x − 3)(x + 1).
<h3>What are polynomials?</h3>
Polynomials are defined as the mathematical expression that is made up of variables.and coefficients.
The model is +X-x-x- ,
Which is X -2x ( negative minus negative is plus)
Therefore, the equation that is represented by the model is = x²-2x-3=(x − 3)(x + 1)
Learn more about polynomials here:
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