28- Of the following alternatives, those that are classified as physical changes are: I. The formation of frost on the surface of vehicles II. Water has a density of 1 g / ml III. It is possible to dissolve up to 40 g of Sodium Chloride in 100 mL of IV water . Fog banks that form in cold and humid places V. The element Cesium is ductile A) I, III and V B) I and III only C) III, IV and V D) II and IV E) I and IV only
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.
28- Of the following alternatives, those that are classified as physical changes are:
I. The formation of frost on the surface of vehicles
II. Water has a density of 1 g / ml
III. It is possible to dissolve up to 40 g of Sodium Chloride in 100 mL of
IV water . Fog banks that form in cold and humid places
V. The element Cesium is ductile
A) I, III and V
B) I and III only
C) III, IV and V
D) II and IV
E) I and IV only
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