The halogen react aggressively with the alkali metals in group 1
Answer: has properties similar to other elements in group 18, does not react readily with other elements, is part of the noble gas group
Explanation: I’ve done on edg before
Answer:
7.85 g/cm³
Explanation:
Density is Mass/Volume
The mass is 212 grams
The volume is 27 cm³ (3 x 3 x 3 = 27)
212/27 = 7.851851852
We can estimate this to 7.85 g/cm³
Sedimentary -<span>deposition of material on Earth’s surface or in bodies of water
</span><span>igneous- </span><span>cooled magma
</span>metamorphic-<span>made of hard layers formed under high temperature and pressure</span>
Answer: orderly arrangement of particles
Explanation:
In a crystaline solid, the particles that compose the solid are arranged or packed in an orderly manner to form a three dimensional crystal lattice with a defined structure. Sodium chloride is a crystaline solid.
In an amorphous solid, the particles that compose the solid aren't arranged in an orderly manner hence the solid tends to be brittle, e.g glass