When two substances react to form a new material with different properties, a Chemical change has occurred.
Answer:
Protons - positive charge located in the nucleus
Neutrons - neutral charge located in the nucleus
Electrons - negative charge located outside the nucleus (they orbit)
You are right, it's CA Calcium, 40.08, Group 2 and Row 4.
A homogenous mixture is uniform and thus hard to recognize as a mixture. An example is water.
Answer:
When a copper is drawn into wire the only change that occurs is change in its shape and size no change will take place into its composition that is the wires are still possessing the properties of copper metal. Thus, a physical change takes place when copper is drawn into wire.
