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Questions and Answers
What is the fundamental property that does not vary with changes in position?
What is the fundamental property that does not vary with changes in position?
- Volume
- Weight
- Mass (correct)
- Length
What unit is used in the SI system to measure mass?
What unit is used in the SI system to measure mass?
- Kilogram (correct)
- Newton
- Gram
- Liter
What is the SI unit of volume?
What is the SI unit of volume?
- Centimeter
- Cubic meter (correct)
- Liter
- Millimeter
Which of the following is considered to be a derived unit?
Which of the following is considered to be a derived unit?
What effect does distance from the center of the Earth have on the weight of a body?
What effect does distance from the center of the Earth have on the weight of a body?
What is the fractional quantity used for weighing small chemicals in laboratories?
What is the fractional quantity used for weighing small chemicals in laboratories?
Which of these units is not part of the SI System?
Which of these units is not part of the SI System?
What is the relationship between 1 kilogram and grams?
What is the relationship between 1 kilogram and grams?
What is the smallest unit of length typically mentioned in scientific measurement?
What is the smallest unit of length typically mentioned in scientific measurement?
Which term indicates the amount of space occupied by a three-dimensional object?
Which term indicates the amount of space occupied by a three-dimensional object?
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Study Notes
Mass and Weight
- Mass is an inherent property of matter.
- Mass is the measure of the quantity of matter a body contains.
- Mass does not vary with position.
- Weight is the result of mass and gravitational attraction.
- Weight varies with distance from the center of the earth.
- The basic unit of mass in the SI system is the kilogram.
- The 'gram' is often used for small quantities of chemicals in laboratories.
Length
- Length is used to express properties such as atomic radius, bond length, and wavelength of electromagnetic radiation.
- Fractional units of length are often used for these quantities, such as nanometers (nm) and picometers (pm).
Volume
- Volume is the amount of space occupied by a three-dimensional object.
- It does not depend on shape.
- The liter (L) is a common unit for the volume of liquids and gases.
- The SI unit of volume is the cubic meter (m³).
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