Which of the following statements about chemical reactions is accurate? A balanced chemical equation gives the correct proportions of chemicals in a chemical reaction and obeys the law of conservation of mass. Evidence of a chemical reaction includes colour change, absorption of energy, and formation of a precipitate. During a chemical reaction, reactant atoms rearrange to form products. all of the above

Which of the following statements about chemical reactions is accurate? A balanced chemical equation gives the correct proportions of chemicals in a chemical reaction and obeys the law of conservation of mass. Evidence of a chemical reaction includes colour change, absorption of energy, and formation of a precipitate. During a chemical reaction, reactant atoms rearrange to form products. all of the above

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter8: Chemical Reactions

Section: Chapter Questions

Problem 5PE

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Concept explainers

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.

Question

100%

Which of the following statements about chemical reactions is accurate?
A balanced chemical equation gives the correct proportions of chemicals in a
chemical reaction and obeys the law of conservation of mass.
Evidence of a chemical reaction includes colour change, absorption of energy,
and formation of a precipitate.
During a chemical reaction, reactant atoms rearrange to form products.
all of the above

Which of the following trends is true with respect to electronegativity?
It decreases, as atomic radius decreases.
It increases from top to bottom on the periodic table.
O It increases from left to right on the periodic table.
all of the above

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