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What must happen to a substance to reach it's melting point?
Increasing the temperature up to the melting point.
What must happen for you to be able to observe an objects chemical properties?
only when a change occurs and a new substance is formed
What must occur for a solution to form?
The correct answer is as follows: One Substance Must Dissolve In Another.
What must happen to a rock for it to become a metamorphic rock?
It must melt.
What two requirements are necessary for a substance to be an eletrolyte?
For a substance to be an electrolyte, it must be able to ionize or dissociate into ions in solution. Also, it must conduct electricity in solution due to the presence of these free ions.
What must happen to all wavelengths of light for a substance to turn black?
All wavelengths of light must be absorbed by the substance for it to appear black. When no light is reflected or transmitted, the substance appears black because no color is perceived by the human eye.
For a substance to appear white what must happen to all wavelength of light?
must be reflected
What must happen a substance to appear black what must happen to all wavelengths of light?
A substance that appears black (in a lighted room) is absorbing all of the visible light that hits it, leaving no visible light to reflect off of it to your eye. So it's absorbing visible light of all wavelengths. (You still don't know what's happening to the infra-red or ultraviolet hitting it. For that, you need to use different detectors.)
What substance to appear white what must happen to all wavelengths of light?
must be reflected
In For a substance to appear white what must happen to all wavelengths of light?
For a substance to appear white, all wavelengths of light must be reflected equally and simultaneously. This results in a balanced mixture of all visible colors being reflected off the surface.
For a substance to appear black and what must happen to all wavelengths of light?
A substance that appears black (in a lighted room) is absorbing all of the visible light that hits it, leaving no visible light to reflect off of it to your eye. So it's absorbing visible light of all wavelengths. (You still don't know what's happening to the infra-red or ultraviolet hitting it. For that, you need to use different detectors.)
When a substance to appear white what must happen to all wavelengths of light?
When a substance appears white, it means that all wavelengths of visible light are being reflected equally by the surface of the substance. This results in a combination of all colors of light reaching our eyes, which our brain interprets as white.
What must happen for an astronaut to appear weightless?
He (or she) must float motionless and unattached to any object or cable.
What is a substance that makes it appear on the periodictable?
In order to appear on the periodic table a substance must be an element, consisting of only one type of atom with a given number of protons in its nucleus. This number, called atomic number, is unique to each element.
What must happen to a substance to reach it's melting point?
Increasing the temperature up to the melting point.
What must happen for you to be able to observe an objects chemical properties?
only when a change occurs and a new substance is formed
What must happen for you to be able. to observe an objects chemical properties?
only when a change occurs and a new substance is formed
