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cricket20 [7]
3 years ago
13

Elements that can be very dangerous but form useful materials when combined with other elements

Chemistry
1 answer:
ELEN [110]3 years ago
6 0

Answer: Halogens

Explanation:

Halogens include elements like Fluorine, Chlorine, Iodine and Bromine. These  elements can be dangerous to humans especially when used in large quantities.

When combined with other elements however, they can form very useful materials. Chlorine for instance forms salt when combined with sodium. Fluorine becomes very useful in toothpaste to protect teeth and bromine can be used in pesticides.

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A block of pine wood has a mass of 120 g and a volume of 300 cm3. What is the density of wood? (Show your work)
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