The vertical (top to bottom) parts of the periodic table are called "groups" or

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

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

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.