Acompound is a pure substance composed of two or more elements, combined by chemical means, in a definite ratio. which container resents a chemical compound?
a) cl
b) h2o
c) n2
d) na

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled