Approximately how many mineral species have scientists identified?

250

5000

1500

60

The atoms 14N7, 15N7 and 16N7 are? A same in p B different in n C same in e D isotopes E all of these

2. what is the formula weight of (nh4) 2so4? 118 amu 116 amu 100 amu 132 amu

A cobait uon has a charge of + 2. how many electrons does it have?

If you decrease the amount of gas, what happens to the pressure? Explain WHY.

How are conclusions and evidence related

How do the different spheres of Earth interact? Volcanic eruptions are natural phenomena in the. They sometimes erupt, spilling out lava and dust. The lava solidifies, forming new landmasses.

Differentiate between mass, volume, and density. Explain why only changing the shape of an object would have no effect on its density.

Describe the properties of noble gases. Based on their electronic arrangement, explain whether they can exist alone in nature.

In the reaction 2k + 2h2o → 2koh + h2, which compound has an element ratio of 2 : 1? h2o h2 k koh

Describe with sketches how electrons are transferred during ionic bonding for: (a) Lithium Bromide (LiBr) (b) Potassium Bromide (KBr) (c) Lithium Chloride (LICI)