Psychology

Entries from February 2020


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"Most human beings have an almost infinite capacity for taking things for granted."

Physics

ARE BASES AND ALKALIS THE SAME THING? »
A base is the opposite of an acid. Most soap and many household cleaners are bases. An ...
WHAT IS AN ACID? »
The word “acid” comes from a Latin word meaning sour. Acids contain hydrogen and, when ...
WHY IS ALUMINIUM KNOWN AS A POOR METAL? »
Poor metals have a low melting point and are quite soft, but they are still very useful. ...
WHAT KIND OF METAL IS CALCIUM? »
Calcium is one of a group of metals called the alkaline-earth metals. They form alkaline ...
WHY DO METALS CORRODE?»
Some metals corrode badly on contact with air and water. This means that the surface of the ...

Chemistry

ARE BASES AND ALKALIS THE SAME THING? »
A base is the opposite of an acid. Most soap and many household cleaners are bases. An ...
WHAT IS AN ACID? »
The word “acid” comes from a Latin word meaning sour. Acids contain hydrogen and, when ...
WHY IS ALUMINIUM KNOWN AS A POOR METAL? »
Poor metals have a low melting point and are quite soft, but they are still very useful. ...
WHAT KIND OF METAL IS CALCIUM? »
Calcium is one of a group of metals called the alkaline-earth metals. They form alkaline ...
WHY DO METALS CORRODE?»
Some metals corrode badly on contact with air and water. This means that the surface of the ...

Biology

COULD HUMANS FIND HOMES ELSEWHERE IN THE UNIVERSE? »
As there are billions of planets in our universe, it is likely that some of them could ...
DOES THE PLANET HAVE ITS OWN RECYCLING SYSTEMS? »
The saying that there is nothing new under the Sun is strangely true. The stuff that makes ...
WHICH KINDS OF ENERGY WILL NOT RUN OUT? »
Wind, moving water and sunshine are always to be found somewhere on the Earth. All of these ...
WHAT ARE NON-RENEWABLE RESOURCES? »
Living things can grow and reproduce themselves. Given the right conditions, they can ...
HOW MUCH LONGER ARE PEOPLE LIVING NOW THAN IN THE PAST? »
In many parts of the world, life expectancy — the number of years that a person can expect ...