10 Questions
What is the pH range for acids on the pH scale?
0-6
What is the ability of a metal to be drawn out into wires known as?
Ductile
What color will litmus paper turn in an alkali?
Blue
What is the property of acids that makes them sour?
Corrosive
What type of solution is formed when an acid and alkali are mixed together?
Salt and water
Why are alloys stronger than pure metals?
Different sizes of particles in alloys prevent them from sliding over each other as easily when force is applied.
What is the difference between 24 carat gold and 18 carat gold?
24 carat gold is pure gold, while 18 carat gold is not pure; only 18 out of 24 parts are real gold.
Why are plane wings made with an alloy like Duralumin instead of pure aluminum?
Using pure aluminum would result in the wings falling off during flight due to the pressure put on them.
Why can't coins be made of pure silver?
Pure silver is too soft and weak to be used in coins and would not withstand wear when in pockets.
What metals are bronze and brass alloys made of?
Bronze is a mixture of copper and zinc, while brass is also an alloy.
Learn about alloys, which are mixtures of different metals known for their strength compared to pure metals. Discover how the different sizes of particles in alloys prevent them from sliding over each other easily. Explore various applications of alloys, from jewelry and artificial joints to airplanes and coins.
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