Is the earth older than any of they rock layers

What causes hydrogen bonding? Select one: a. Motion of electrons b. Bonding of hydrogen to a highly electronegative element, specifically N, O or F c. Sharing of electron pairs d. Attraction between ions

Which is a negative effect of these chemicals on society? A. polluting the water supply B. contributing to greenhouse gases C. feeding harmful bacteria in the soil D. making it difficult for crops to grow

List 3 elements tyat would have similar properties to chlorine

When is the small size of gas particles taken into account?

Show how the following are formed Beryllium chloride Phosphorous pentachloride Boron dichloride Methane Carbon tetrachloride

What volume would 3.01•1023 molecules of oxygen gas occupy at STP?

In most food webs there are many producers, fewer herbivores, and even fewer carnivores. Which statement best explains why there are always fewer carnivores than producers in a food web? A. There is not enough space to illustrate them. B.

Which of Deeandra observation is scientifically testable

A round, three dimensional object is a?

The energy needed to start a chemical reaction is called