Reacción química

The transcript explains the distinction between chemical reactions and physical processes. Chemical reactions involve the transformation of substances through the breaking and forming of chemical bonds, resulting in new products. In contrast, physical processes like melting or dissolving do not change the particles themselves but only rearrange them.

What is a key characteristic of a chemical reaction?

• Particles are only rearranged

• Chemical bonds are broken and formed

• Substances remain unchanged

• It involves only physical changes

How does a chemical reaction differ from a physical process?

• Physical processes involve breaking chemical bonds

• Chemical reactions result in new substances

• Chemical reactions involve only physical changes

• Physical processes create new chemical bonds

Which of the following is an example of a physical process?

• Baking a cake

• Melting ice

• Rusting iron

• Burning wood

In a physical process, what happens to the particles?

• They are rearranged differently

• They are destroyed

• They form new chemical bonds

• They change into new substances

Which process involves no change in the inherent properties of particles?

• Chemical reaction

• Physical process

• Nuclear reaction

• Biological process