Barb tests the properties of three minerals and makes a data table to record her results, as shown below. PHYSICAL PROPERTIES OF
THREE MINERALS
Property 1 Property 2
Tale white not shiny
Graphite black shiny
Quartz none not shiny
Which two properties did Barb test?
streak and luster
streak and cleavage
mineral size and luster
hardness and mineral type

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball