what would be the best tool to measure the amount of matter in an object?

The first questions we must respond are: Is all evidence thing? What is matter? How exercise we classify and collect the matter that matters?

In chemical science as in most sciences, matter is divers as anything that has mass and takes upwards space. Matter can therefore be weighed and measured and the numbers generated analyzed and compared for the sake of testify or inquiry. When we measure the matter we will use, information technology is important to follow the rules of drove and ciphering that keep the measurements in a form that is capable of comparison. What I mean by this is that you can�t weigh an object on a scale capable of simply measuring to the 0.1 gram but report it to the 0.001 gram. That would be claiming a degree of precision that does not exist in the measurement. The use of pregnant figure rules will proceed us from making this kind of mistake. We too need to realize that some of the evidence we volition collect both in research and in forensic investigation is not in fact matter. Observations, while not a type of affair are of considerable value when investigating. Observations fall under a type of data called qualitative data and are just as important every bit quantitative (measured or calculated) data.

Qualitative information is the observations investigator makes. While subjective in nature, these observations have value since they often will aid an investigator early on decide what evidence to collect or the general management an investigation should go. Collection of qualitative information might include surveying witnesses or suspects, taking pictures of criminal offence scenes or objects left at a crime scene, etc. Because of the subjective nature of the data, in that location is more difficulty in comparing the results. We often say that data of this nature tin be used to form a consensus simply never an absolute answer such as nosotros would go far quantitative information because of the issues with reproducibility.

Quantitative data is the collection of numbers. These numbers could be raw counts like how many people were nowadays at a party or they could be measurements like the mass of an apple. The advantage to quantitative data is that is tin can be reproduced and is non-subjective in nature. This ways if several different investigators attempted the measurement they should all come to the aforementioned answer within the standard departure of the data.

Principal Points

Qualitative research involves analysis of data such as words (east.g., from interviews), pictures (east.g., video), or objects (east.g., an artifact).

Quantitative research involves analysis of numerical information.

There are strengths and weaknesses of both qualitative and quantitative investigation.

Overly focusing on the debate of "qualitative versus quantitative" frames the methods in opposition. It is important to focus besides on how the techniques can be integrated, such as in mixed methods research. More good tin come of developing skills in both realms than debating which method is superior.

We already divers the terms concrete and chemical backdrop of matter in the first lecture, now we will continue with farther defining the properties of matter. Nosotros can start with the terms intensive properties versus extensive properties. Intensive properties are those backdrop of matter that do not depend on the amount of the substance that is nowadays. A list of some of the most common intensive backdrop is shown hither:

Intensive Properties of Matter
Colour	Odor	Luster	Humid Point	Hardness
Malleability	Ductility	Conductivity	Density	Pressure

Gary, Delight attach the definitions below to the pictures as rollover or pop-up boxes.

• Color - the wavelengths of light as perceived by the human eye
• Odor - the property of a substance that activates the sense of smell
• Luster - How shiny a substance is.
• Humid Signal - The temperature at which the vapor pressure of a liquid is equal to the force per unit area on the liquid (generally atmospheric pressure).
• Hardness - How easily a substance can be scratched.
• Malleability - The ability of a substance to be browbeaten into thin sheets.
• Ductility - The power of a substance to be fatigued into sparse wires.
• Conductivity - The ability of a substance to allow the flow of energy or electricity.
• Density - The mass of a substance divided by its book
• Pressure - the force practical per unit of measurement area of a substance

Note that all of these properties (like the case of density above) tin can exist measured or calculated and thus fall under the realm of quantitative information. While y'all might not call back of colour as beingness a number, it in fact can be measured using a spectrometer and the wavelength of the color determined. Odors also are not immediately thought of in terms of numerical data just are in fact gaseous molecules that can be measured by mass spectrometry to yield the percentages of each component chemical compound by mass.

Extensive backdrop are the more than normally measured physical properties of thing and are dependent on the corporeality of substance present. Note hither that mass and weight are listed equally separate items although we often utilize the two terms interchangeably. Every bit long as nosotros are on Earth, the mass and weight of an object are the aforementioned. If we motion to the moon or Venus, the mass of an object will remain the aforementioned but the weight will modify. A person weighing 150 lbs on Earth would only weigh 24.9 lbs on the moon and on Venus, 136 lbs. So although the mass remains 150 lbs the weight changes based on the gravity of the planet. Other measurements similar volume and length volition be the aforementioned no matter where they are taken.

Extensive - Properties that do depend on the amount of matter nowadays:

1) Mass or Weight

Difference between Mass and Weight

Mass - A measurement of the amount of matter in an object (grams).

Weight - A measurement of the gravitational forcefulness of attraction of the earth acting on an object.

2) Volume:

three) Length:

A measure of the corporeality of distance betwixt the get-go and end of an object.

http://juniorsteps.global2.vic.edu.au/2013/08/15/measuring-length/

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Source: https://www.chem.fsu.edu/chemlab/chm1020c/lecture%202/01.php

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