that question iz absolutely true
Elements in definite proportions mean that the mineral always has certain elements in the same ratio with each other. For example, in Quartz there is for every 2 Oxygen atoms 1 Silicon atom
No, there is no mineral that contains all the elements, or even most of them.
yes true
TRUE!
no
true
True !
false a mineral can not scratch any mineral harder than itself
Most minerals have one crystal shape each, but that shape may be different for a different mineral. However there are a few substances which form different shapes of crystal under different conditions. This is called polymorphism, or allotropy if the substance is an element. For instance carbon can form graphite or diamond.
yep ^That answer is 100% false. Yellow topaz is NOT the same as citrine. Though they appear similar in color, they are chemically very different. Citrine is a quartz crystal and topaz is mineral crystal and therefore the more expensive of the two stones.
False- Awesomeness399
False. In a crystalline structure, atoms are in an orderly arrangement.
Crystals of a certain mineral have a regular formation of atoms. However, crystals of the same mineral can grow differently. The presence of trace minerals, variations in heat, pressure, and the space that they have to grow in can influence the shape of a crystal. Crystalline structures demonstrate characteristic geographic variations for these reasons.
True !
False
false
A mineral always contains certain elements in definite proportions
false a mineral can not scratch any mineral harder than itself
Most minerals have one crystal shape each, but that shape may be different for a different mineral. However there are a few substances which form different shapes of crystal under different conditions. This is called polymorphism, or allotropy if the substance is an element. For instance carbon can form graphite or diamond.
false. if a mineral is harder than another mineral, it would be able to scratch the softer one
yep ^That answer is 100% false. Yellow topaz is NOT the same as citrine. Though they appear similar in color, they are chemically very different. Citrine is a quartz crystal and topaz is mineral crystal and therefore the more expensive of the two stones.
False. Afghanistan has major mineral reserves but lacks the infrastructure to exploit it.
False