What group of elements has a full valence shell?

Is it correct to say that only one observable change accompanies a chemical change?

This substance should never be used to put out a petrol or oil fire

What is the function of stomata in plants? Tubes that carry water and nutrients from the roots to the stems Reproductive organ in plants Small holes in plants that allow carbon dioxide in and oxygen and water vapor out

Evaporating water produces gaseous water. What has occurred during this process?

Which type of radioactive product has zero mass and zero charge?

Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction?

Which is a typical characteristic of an ionic compound? a. electron pairs are shared among atoms. b. the ionic compound has a low solubility in water. c. the ionic compound is described as a molecule?

34g aluminum are combined with 39g chlorine gas which is the limiting reactant

Using 3 O2 molecules and 5 H2 molecules, how many water molecules can be produced? Do you have any left over?

The specific heat of a certain type of cooking oil is 1.75 j / (g·°c). how much heat energy is needed to raise the temperature of 2.83 kg of this oil from 23 °c to 191 °c?