A roll shaped like a car

What is the atomic number of an element? a. The number of valence electrons c. The number of electrons in the inner most shell b. The number of protons in the nucleus d. The total number of electrons

Which is not a property of a gas? a. the density of a gaseous substance varies strongly with temperature. b. a sample of gas assumes the shape and volume of its container. c. gases are highly compressible. d.

300 °C would be found in which temperature range? A. 373 K-472 K B. 473 K-572 K C. 573 K-672 K D. 673 K-772 K

What adds air to flour before it is measured?

Which two processes allow water to enter the atmosphere in a gaseous state? precipitation and evaporation evaporation and condensation precipitation and condensation evaporation and transpiration?

One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from earth. If you are about 11 years old now, how old will you be when light that is leaving Arcturus today reaches earth?

What is melted rock and minerals found below earths crust

What do many bases have in common? A. They often release oxygen gas. B. They often form hydrogen ions. C. They often release hydrogen gas. D. They often form hydroxide ions.

What is 3 tenths+4tenths

A lunar eclipse can only occur at which lunar phase? And what about a solar eclipse?