What holds the ions together in galena?

A Change in matter that can be seen through direct observation are called?

Cinnabar is an ore of mercury that contains only Hg and S. When a 0.350 g sample of cinnabar is heated in oxygen, the ore decomposes completely to yield 0.302 g Hg metal. What is the empirical formula of cinnabar?

Sodium atoms emit light with a wavelength of 330 nm when an electron moves from a 4p orbital to a 3s orbital.

A gust of wind blowing east pushes against a ball. When will the wind do work on the ball? when the ball moves to the east when the ball moves to the north when the ball stays in one place when the ball moves north or south

If you forget to dry off a bread knife and when you washed it and reddish brown spots appeared on it would that be physical or chemical change

Chemical equation for liquid ethyltoluene

Who is the discover of x-rays

Using complete sentences, explain how to predict the products and balance the reaction for the combustion of butane, C4H10. C4H10 + O2

which of the following is true? soil forms from weathered rocks and organic materials. fertile soil usually forms in areas with steep slopes.

Which are forms of frozen water? Check all that apply. dew frost hail rain sleet