Physical change means - a change from one state ( solid,liquid or gas) to another state without change in chemical composition.
Baking soda is a bicarbonate, which means that each molecule of baking soda
contains a sodium atom, a H atom, an O2 atom, and a CO2 molecule.
Vinegar contains acetic acid, and each molecule contains a H atom, and an acetate ion.
When they're combined, the hydrogen atom in the acetic acid meets up with the H and O2 atoms in the baking soda to form a molecule of water, while the acetate ion grabs onto the sodium atom and forms a salt, sodium, acetate. The CO2 molecule, free of its other chemical bonds, can now escape, and bubbles form as a gas.
<h2>
</h2>
<em>1</em><em>.</em><em> </em><em>matter</em>
<em>2</em><em>.</em><em> </em><em>oxygen</em>
<em>3</em><em>.</em><em> </em><em>water</em>
<em>4</em><em>.</em><em> </em><em>hydrogen</em>
<em>5</em><em>.</em><em> </em><em>compound</em>
<em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>:</em><em>)</em>
PV=nRT
P=nRT/V
P=[(0.650mol)(0.08206)(298K)]/(0.750L)=21.2atm
