The chemical combination of two or more different atoms in fixed amounts is called a(n)?
a.
compound.
b.
element.
c.
mixture.
d.
orbit.

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

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