1) Which diagram shows an element? 2) which diagram shows a mixture?
3) which diagram shows a compound?
4)which diagram only shows atoms chemically bonded together?
5) which diagram shows different atoms of matter physically combined together?

Which of the following pressures is equal to 760 mm hg? 2.0 atm 101.3 pa 101,300 kpa 101,300 pa

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

How many moles of al3+ ions are in 1.25 moles of al2o3