science

what are the products of this metal reaction?

• Ca

• H2O

• Ca(OH)2

• H2

Lithium + water -> lithium hydroxide + hydrogen

what is the product of this metal reaction?

• Lithium

• water

• lithium hydroxide

• hydrogen

Sodium+ water -> sodium hydroxide + hydrogen

what is the product of this metal reaction?

• Sodium hydroxide

• water

• sodium

• hydrogen

Lithium reacts with water, which one is the example of the reaction?

• sodium melts and skims over the surface producing a stream of small bubbles.

• bubbles of gas are given off quite quickly. when tested with universal indicator the water is alkaline

• potassium immediately produces a lilac fame as it skims around the surface making a fizzing noise

Sodium reacts with water, which one is the example of the reaction?

• sodium melts and skims over the surface producing a stream of small bubbles.

• bubbles of gas are given off quite quickly. when tested with universal indicator the water is alkaline

• potassium immediately produces a lilac fame as it skims around the surface making a fizzing noise

which of following element will not react with the hot water or vapor?

• potassium

• copper

• sodium

• zinc

which of following element will not react with the hot water or vapor?

• silver

• potassium

• calcium

• sodium

order these following element starting from the most reactive

• copper, silver, hydrogen,zinc, iron,magnesium, sodium

• potassium, copper, hydrogen, calcium, sodium, silver

• potassium, sodium, magnesium, zinc, copper, silver

the first scientist to study chemistry is called

• alchemistry

• alchemist

• chemistry

Acid was used to ..

• to find out if gold was real or fake

• to make a real gold

• to identify silver