How many atoms of silicon would there be in a sample that contained 4.66 x 1030 grams? ANSWER CHOICES INCLUDED IN IMAGE ABOVE

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

What is an example of a physical property?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line