Properties of matter and their measurement

The video tutorial covers the characteristic properties of substances, distinguishing between physical and chemical properties. It explains the International System of Units (SI) and its significance in scientific measurements. The tutorial details the seven base units of the SI system, focusing on length, mass, and temperature. It also clarifies the difference between mass and weight, and discusses volume and density. Finally, it explores temperature scales, including Celsius, Fahrenheit, and Kelvin, and their conversions.

Which of the following is a physical property of a substance?

• Ability to rust

• Color

• Flammability

• Reactivity with acid

Why is the International System of Units (SI) important in scientific research?

• It is only used in Europe.

• It limits the number of units to only three.

• It provides a universal language for measurements.

• It allows for the use of local currencies.

Which of the following is NOT one of the seven base SI units?

• Kilogram

• Candela

• Meter

• Liter

What is the unit of electric current in the SI system?

• Ohm

• Watt

• Ampere

• Volt

How is mass different from weight?

• Weight is measured in kilograms, mass in newtons.

• Mass is constant, weight varies with gravity.

• Weight is a measure of matter, mass is not.

• Mass is affected by gravity, weight is not.

What is the SI unit of volume?

• Liter

• Milliliter

• Gallon

• Cubic meter

How is density defined?

• Volume per unit weight

• Weight per unit volume

• Volume per unit mass

• Mass per unit volume

Which temperature scale is based on the properties of gases?

• Fahrenheit

• Celsius

• Rankine

• Kelvin

What is the relationship between Celsius and Kelvin scales?

• Kelvin = Celsius / 273.15

• Kelvin = Celsius + 273.15

• Kelvin = Celsius - 273.15

• Kelvin = Celsius * 273.15

What is the freezing point of water on the Celsius scale?

• 100 degrees

• 32 degrees

• 0 degrees

• 273.15 degrees