0
What else can I help you with?
When a substance change into a different substance a change has occurred?
Chemical Change.
A chemical change is a change in the what of a substance?
burning the substance.
What does a solution concentration measures?
how fast a substance dissolves
What scale measures both the acidity and alkalinity of a substance?
The pH scale measures both the acidity and alkalinity of a substance. It ranges from 0 to 14, with values less than 7 indicating acidity, values equal to 7 indicating neutrality, and values greater than 7 indicating alkalinity. The scale is logarithmic, meaning each whole number change represents a tenfold change in acidity or alkalinity.
How can you identify is the substance is optically active?
A substance is optically active if it has the ability to rotate plane-polarized light. This can be detected using a polarimeter, which measures the extent and direction of rotation caused by the substance. Optically active substances have chiral centers that do not have a plane of symmetry, making them capable of rotating the plane of polarized light.
How can light refract?
Light hits a substance. The substance makes light change speed. Light gets scattered through the substance. Then the light bends.
How can light be refracted?
Light can be refracted when it passes from one medium to another with a different density, causing its speed to change. The change in speed leads to a change in the light's direction, causing it to bend. This bending is what we observe as refraction.
What instrument that measures how much heat energy is stored in a substance is called a?
A calorimeter is an instrument that measures the amount of heat energy stored in a substance by determining the temperature change during a chemical reaction or physical process.
What can light energy change into heat energy?
If light is absorbed by a substance, it is converted to heat.
What does a spectrophotometer measure and how does it work?
A spectrophotometer measures the amount of light absorbed or transmitted by a substance at different wavelengths. It works by shining light through a sample and measuring how much light is absorbed or transmitted, which provides information about the substance's properties.
What is a spectrophotometer and what does it measure?
A spectrophotometer is a scientific instrument that measures the amount of light absorbed or transmitted by a substance at different wavelengths. It is commonly used to determine the concentration of a substance in a solution by measuring how much light is absorbed by the sample.
2001 grand am how do i reset change oil light?
The car actually measures the viscosity of the oil while you are driving and running the car when you change the oil the light will be reset.
Is heat light and change in odor indicate a physical change?
Heat, light, and change in odor can indicate a physical change depending on the context. For example, melting ice into water is a physical change because it does not alter the chemical composition of the substance. However, if a substance undergoes a chemical reaction that results in heat, light, and change in odor, then it would be considered a chemical change.
What is the change in the direction of light as it enters a different substance called?
The change in the direction of light as it enters a different substance is called refraction. This phenomenon occurs because light travels at different speeds in different mediums, causing it to bend at the interface between the two substances.
Differentiate absorption method from colorimetric method?
Absorption method measures the amount of light absorbed by a sample at a specific wavelength, and is used to quantify the concentration of a substance. Colorimetric method utilizes color changes to detect the presence or concentration of a substance, often involving a chemical reaction that produces a color change.
What changes does each instrument measure in science?
Thermometer measures temperature. Barometer measures atmospheric pressure. pH meter measures acidity or alkalinity. Spectrophotometer measures the amount of light absorbed or emitted by a substance. Geiger counter measures radiation levels. Hygrometer measures humidity. Anemometer measures wind speed. Voltmeter measures electric potential difference. Spectrometer measures the wavelengths of light emitted by a source. Mass spectrometer measures the mass-to-charge ratio of ions.
What is the refractive index of a substance?
The refractive index of a substance is a measure of how much light bends when passing through that substance compared to the speed of light in a vacuum. It is a dimensionless quantity that determines the speed of light in that medium. The higher the refractive index, the slower light travels through the substance.
