Chemistry

Learning physics and chemistry easily and freely - Science for elementary school, middle school and high school

Free online chemistry lesson for elementary school, middle school and high school.

Mass of a liter of water

The mass of a liter of water can be determined using one of the described  methods for weighing a liquid.
The chosen container must have a capacity of 1 liter but it is also possible to use a smaller container and use the proportionality between mass and volume.

In order to obtain the best result, we should use a container with the most accurate indications of volume. Beakers, flasks and test tubes have graduations but their accuracy is lower than that of a volumetric flask.
There are different models of volumetric flask: 25, 50, 100, 500 mL and 1L.
Models of 1 L remain quite rare but we may measure the mass of 500 mL of water and multiply the result by 2 to obtain the mass of 1  L (1000 mL) of water.

The measure gives finally this result:
A liter of pure water has a mass of 1 kg

This value is a characteristic of pure water: another pure substance or a mixture that contains water would have a different mass.
This value has a historical origin: a kilogram was defined as the mass of a liter of pure water in 1995.

 Science class Mechanics lessons Water Water on Earth Changes of state in the nature: the water cycle Water in human body Test for water Properties of water in different states States of matter States of matter and its changes Boiling water Water: freezing and melting Changes of state: mass and volume Molecules in different states of matter Mixtures and solutions Heterogeneous mixtures Homogeneous mixtures Decantation Centrifugation Filtration Vaporization of water Distillation Chromatography Dissolving a solid in water Conservation of mass on dissolving Miscibility in water Mass and volume Volume and its units Measuring volume with a graduated cylinder Mass and its units Measuring the mass of a liquid Mass of a liter of water Volumetric mass density Air and atmosphere Earth's atmosphere protect us Pressure Atoms and molecules Molecules Molecules in mixtures and pure substances Molecules and states of matter Atoms Composition of molecules Constituents of the atoms The electrical neutrality of the atom Combustions Basics of combustion The combustion of carbon The combustion of butane Atoms and chemical reactions Chemical reactions Chemical equations Law of conservation of mass Chemical synthesis Metals Most common metals How to distinguish metals ? Corrosion of metals Electrical conductivity of solid materials Electrons and free electrons Electric current in metals Ions The conductivity of aqueous solutions Aqueous solutions and ions The direction of movement of ions Formation of ions Tests for ions Acidic and basic solutions pH of aqueous solutions Ions in acidic and basic solutions Dilution of acids and bases Composition of hydrochloric acid Chemical reaction between iron and hydrochloric acid Electrochemical cells and chemical energy Chemical reaction beteween a copper sulphate solution and zinc Copper sulfate and zinc battery Basics of electrochemical cell