SILICATES

Question 1

silicate def

Answer 1

covalent-bonded minerals with both silicon/oxygen in chemical formula

most abundant group of minerals

Question 2

basic divisions of silicate minerals

Answer 2

iron-free silicate, dont contain iron/magnesium atoms

iron-rich silicate

Question 3

how do silicates form

Answer 3

all ways a mineral can form

Question 4

iron-rich silicate properties

Answer 4

contain silicon/oxygen and iron/magnesium atoms in chemical formula be

generally dark in colour

form before iron-free when atoms bond as magma cools

tend to break apart/weather faster at earth’s surface

Question 5

iron-free silicate properties

Answer 5

contain silicon/oxygen dont contain iron/magnesium atoms in chemical formula

generally lighter in colour

tend to form after iron-rich when atoms bond as magma cools

Question 6

why do iron-rich silicate contain fe/mg

Answer 6

to for ionic bonds to became less negative