Science Quiz

What are the 2 different types of solids?

• Crystal

• Amorphous

• Diamond

• Graphite

Define crystal:

• Well defined edges and faces, different x-rays and tend to have sharp melting points

• Irregular or curved surfaces, do not five well resolved x-ray diffraction patterns, and melt over a wide range of temperatures.

Describe Amorphous:

• Irregular or curved surfaces, do not give well-resolved x-ray diffraction patterns, and melt over a wide range of temperatures.

• Well-defined edges and faces, different x-rays and tend to have sharp melting points.

How does hydrogen and oxygen form a molecule?

• The electron from each atom feels attraction to the protons from the nucleus in the other atom. This pulls both atoms

• They form togther and attract each others protons

• They are opaque

What is the extended structure of sodium chloride?

• 15 chloride

• 14-soduim

• 13-chloride

• 16- soduim

What is the difference is diamonds and graphite?

• Graphite- opaque and metallic

• Diamond- transparent and brilliant

• Graphite- transparent and brilliant

• Diamond-opaque and metallic

What are the states of matter? 4 answers

• Solid

• Liquid

• Gas

• Plasma

• Diamond

How elements are different from atoms?

• They are pure subastances

• Elements are pure substances with specific properties. Atoms are the smallest units of elements that still retain the elements properties

• Atoms are smaller