Click the correct answer (True or False).
Click the correct answer.
Silicon and arsenic fall under which of the following categories?
Metals
Non-metals
Metalloids
Noble gases
Which of these cannot be separated by filtration?
A mixture of chalk powder and water
A mixture of sand and water
A mixture of sugar and milk
A mixture of rice and milk
What is the insoluble solid left behind on the filter paper during filtration called?
Filtrate
Particle
Residue
Sediment
Which of the following cannot be used in addition to filter paper in the process of filtration?
Glass wool
Unglased porcelain
Cotton
Sieve
Click the correct answer.
An element cannot be
into simpler substances by normal chemical means.
added
combined
changed
broken down
Most of the metals are found in the earth’s
.
crust
atmosphere
sea bed
core
do not react chemically with other elements.
Noble gases
Metals
Non-metals
Metalloids
possess some properties of metals and some properties of non-metals.
Metalloids
Metals
Noble gases
Non-metals
Noble gases are present only in traces in
.
air
earth’s crust
oceans
earth’s core
