Why should you not determine the mass of a hot object?
3) Do not weigh hot or cold objects on the balance. Hot objects will give erroneously lower readings due to air buoyancy, while cold objects will give higher readings due to the condensation of water vapor.
What are the basic units of length mass volume and temperature in the SI system quizlet?
The basic unit of length in the SI system is the meter (m), The basic unit of mass in the SI system is the kilogram (kg), For solids with larger volumes, scientists use the SI unit known as the cubic meter (m3), grams per cubic centimeter (g/cm3) and grams per milliliter (g/mL), The second (s) is the SI unit used to …
What decimal power does the abbreviation μ represent?
Decimal Prefixes and Multiples, Powers of Ten
| Multiple | Prefix | Symbol |
|---|---|---|
| 10-1 | deci | d |
| 10-2 | centi | c |
| 10-3 | milli | m |
| 10-6 | micro | (Greek mu) |
How could you separate a mixture of acetone and α naphthol quizlet?
How could you separate a mixture of acetone and alpha-naphthol? In cyclohexane alpha-naphthol is insoluble and acetone is soluble. Alpha-naphthol can be removed by filtering it from the cyclohexane acetone mixture.
Does heat affect the mass of an object?
As the energy within a an object increases – ie by heating it up – it will increase in mass.
Is mass affected by temperature?
The mass remains the same. The volume increases. And thus the density decreases. So, for example, a bar might appear longer when heated, but it will weigh the same.
What is not an advantage of using the metric system?
The only major disadvantage in using the metric system is that it's not well-suited for working with fractions. For example, 1/6 meter is approximately equivalent to 167 millimeters and 1/3 kilogram is approximately equal to 333 grams.
What are the steps that scientists use to answer questions and solve problems?
The scientific method has five basic steps, plus one feedback step:
- Make an observation.
- Ask a question.
- Form a hypothesis, or testable explanation.
- Make a prediction based on the hypothesis.
- Test the prediction.
- Iterate: use the results to make new hypotheses or predictions.
What is the prefix F?
Femto (symbol f) is a unit prefix in the metric system denoting a factor of 10−15. It was added to the International System of Units (SI) in 1964. It is derived from the Danish word femten, meaning "fifteen", which has a vaguely similar spelling to fermi, which was introduced earlier to mean a femtometer.
What multiple of ten does each SI prefix represent?
In the SI, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth.
Why should you never weigh a hot object quizlet?
–Hot objects can result in air movement within the balance that can decrease the accuracy of your measurement.
Is Pepto Bismol heterogeneous or homogeneous?
We cannot see the uh companies of the urine and pepto bismol is heterogeneous. A cup of tea with honey is genesis, and gasoline is also a homogeneous mixture.
Why does temperature affect mass?
How does temperature affect the mass of an object? When you heat the temperature the atoms in the object move faster. So that's how the mass of an object changes.
Does mass change as temperature increases?
When the temperatue increases the volume of matter increases and density decreases. It is because the mass of that object remains same. For example, if the temperature of iron bob is increases its volume increases and density decreases while the mass is same.
What happens to mass when heated?
Most recent answer In fact, the mass of a unit volume of a material increases slightly on heating according to Einstein's formula, but at the same time decreases much faster due to thermal expansion.
Why does heat change mass?
This is because it undergoes thermal expansion. When the temperature decreases then the volume decreases and the density increases keeping mass constant this is called contraction of substance due to the loss of heat.
What are the disadvantages of using the metric system of measurement?
The only major disadvantage in using the metric system is that it's not well-suited for working with fractions. For example, 1/6 meter is approximately equivalent to 167 millimeters and 1/3 kilogram is approximately equal to 333 grams.
What are the pros and cons of the metric system?
The pros and cons of the metric system
- Decimal. Metric base units. …
- Prefixed naming convention. All metric units are clearly related to each other using prefixes. …
- Precise whole units. …
- Simplicity. …
- One size doesn't fit all. …
- Rubbish sounding words. …
- Arbitrary scale. …
- The prefixes can be cumbersome and unnecessary in everyday use.
May 18, 2016
How do you apply scientific method in environmental science research give 2 examples?
0:273:34The Scientific Method Applied to Environmental Problems – YouTubeYouTube
What is scientific research PDF?
Scientific researches are studies that should be systematically planned before performing them. In this review, classification and description of scientific studies, planning stage randomisation and bias are explained. Discover the world's research.
What does the suffix ia mean in medical terminology?
a condition or state The new suffix is “ia” which is translated to “a condition or state”. So, the new meaning is “slow heart rate”.
What is suffix in medical terminology?
Medical terms always end with a suffix. 3. The suffix usually indicates a specialty, test, procedure, function, condition/disorder, or status. For example, “itis” means inflammation and “ectomy” means removal. Alternatively, the suffix may simply make the word a noun or adjective.
What is the prefix tera?
Tera (1 trillion) comes from the Greek word teras or teratos, meaning "marvel, monster," and has been in use since approximately 1947. The prefixes exa (1 quintillion) and peta (1 quadrillion) were added to the International System of Units (SI) in 1975.
Why should chemicals used in the experiment never be weighed directly on the pan of the balance?
Many chemicals react with the balance pan Any residue that sticks to the pan can cause errors to the weighing. It could also contaminate any other chemicals weighed afterward. Therefore, instead of weighing materials directly on the balance pan, always weigh the chemicals in or on something as the container.
What error if any would the calculated density of the solid have if the material had a hollow center quizlet?
The volume would be higher due to the solid being hollower because of the air inside the hollow object. This would cause the density to be lower because the volume changed.
Can Tums cause black stool?
Pepto-Bismol can often cause a darkened color of the stool or tongue. This is because bismuth subsalicylate can react with small amounts of sulfur to create bismuth sulfide, a black substance. While darkened stool may be confused with bloody stool (a serious condition), this side effect is temporary and harmless.
Is a cup of tea with honey heterogeneous?
Homo genus. We cannot see the uh companies of the urine and pepto bismol is heterogeneous. A cup of tea with honey is genesis, and gasoline is also a homogeneous mixture.
Does mass change with heat?
The mass remains the same. The volume increases. And thus the density decreases. So, for example, a bar might appear longer when heated, but it will weigh the same.
Does mass depend on temperature?
In general, the temperature does not affect the mass of a closed system.
Why are hot objects heavier?
If you have absolutely identical objects that have the same weight exactly when they are at the same temperature, then when one object is heated, it will weigh more. This is because the gravitational force depends on the stress energy tensor in general relativity.