If you break a piece of glass, the shape of the glass changes, but the properties in the fragments remain the same. Which of the following has occurred?

A temperature change
A phase change
A chemical change
A physical change

The correct answer is - A physical change.

Explanation:

Physical change is the change in the physical properties of the substances such as mass, shape or size, volume, density, and others. If there is any change occur in such properties of the substances. If you break a piece of glass the shape of the glass changes occurs, however, the properties remain the same.

Thus, the correct answer is - A physical change.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.