# Quick Answer: How Are Properties Used To Identify A Substance?

## Can you identify a substance by its density?

You can identify an unknown substance by measuring its density and comparing your result to a list of known densities.

Density = mass/volume.

Assume that you have to identify an unknown metal.

You divide the mass by the volume and compare the density to a list of known densities..

## Can color be used to identify a substance?

You might observe and measure such properties as color, odor, texture, density, boiling point, and freezing point. … Other properties, such as density, can be used to identify substances. They do not vary from one sample of the same substance to another.

## Can volume be used to identify a substance?

A drop of water may be 1g in mass and 1mL in volume. Both are water, but they have different mass and volumes. Therefore you can’t identify whether a substance is water just by measuring its mass and volume. However, the ratio of the mass to volume (density) can be used to identify substances.

## What is difference between characteristics and properties?

A characteristic is how something is; how it behaves, appears, interacts, etc. … Properties never change. They are the basic make up of something. Properties are concrete; characteristics change.

## What tests can be done to identify an unknown substance?

Identifying Unknown SubstancesReally simple methods.Spectroscopy: Hope you’ve got good funding!Other common methods for identifying stuff:Mass spectrometry:X-ray diffraction (XRD):Gravimetric analysis: You use the change in mass during an experiment to figure out what you’ve got.More items…•

## Why can you use density to identify a substance?

Density can be useful in identifying substances. It is also a convenient property because it provides a link (or conversion factor) between the mass and the volume of a substance. Mass and volume are extensive (or extrinsic) properties of matter – they depend on amount.

## Does mass change the physical property of a substance?

Mass and volume are both examples of extensive physical properties.

## What are four examples of properties?

Some examples of physical properties are:color (intensive)density (intensive)volume (extensive)mass (extensive)boiling point (intensive): the temperature at which a substance boils.melting point (intensive): the temperature at which a substance melts.

## Why is it important to identify unknown substances?

Detecting known substances, and determining their quantity, is also important. … In manufacturing, it is important to detect any impurities in the product and to determine whether they are present in a significant amount. Analytical characterization is critical in pharmaceutical products, for instance.

## How can the properties of a substance be used to identify it?

Identifying a substance Scientists use characteristic properties to identify an unknown substance. Characteristic properties are used because the sample size and the shape of the substance does not matter. 1 gram of lead is still the same color as 100 tons of lead.

## How do you identify a substance?

Typically, the identity of a substance can be described by a:chemical name, for example, benzene;number, for example, EC number 200-753-7, and.chemical composition, for example, >99 % benzene and <1 % toluene. the composition is determined by chemical analysis.

## How can you say that one substance is different from another?

Melting or boiling point is another property that scientists can use to identify a substance. Melting point is the temperature at which a substance changes from solid → liquid. … Then, you could compare their melting point to a chart of known melting points to determine their identity.