Yes, yes it is. LOL
Giving off is emitting it and reflecting light is reflecting it
Yes, when light bounces off the surface of an object, it undergoes reflection which results in a change in the direction of the light. This change in direction is determined by the angle of incidence and the angle of reflection, according to the law of reflection.
Temperature is the perception we have of the vibrational energy of the molecules in any substance. The faster they vibrate, the hotter the object. So the answer is physical.
Exothermic
To change the direction of a light beam, you can use mirrors or lenses to reflect or refract the light in the desired direction. Adjusting the angle of the mirror or lens will change the direction of the light beam. Alternatively, you can physically move the light source or the object the light is reflecting off of to change the direction of the beam.
I would think it to be a Physical Change. Not chemical.
This is both a physical and chemical change. The explosion involves the release of energy (heat and light), which is a chemical change due to the breaking of chemical bonds. The breaking of the wrapper into many pieces is a physical change as it does not involve any change in the chemical composition of the materials.
It would be physical change because the substance doesn't change. Signs of chemical changes would be absorbing, liberating (releasing) heat, fizzing, changes of color,or giving off light.
Exothermic Change
chemical change
Giving off is emitting it and reflecting light is reflecting it
It is a chemical change because the chemical composition is changed during this reaction.
It's not a change at all. It is simply what the firefly does. But it is a result of a chemical change within the firefly. A chemical reaction involves a transfer of energy. In this case, the energy would go into creating light waves from the molecules in the firefly, causing it to glow.
Change in temperature, gaseous bubbles, giving off light, change in color, change in properties. These are chemical changes, but it is still five examples of science.
Breaking off a branch of a tree is a physical change.
A light bulb is not a change in and of itself but the process by which it gives off light is physical. While an electric current causes a given component of the bulb to glow (it may be the filament of an incandescent bulb or the vapor in a fluorescent one), but that substance does not change its chemical identity.
Change your oil/filter and reset the light.