What does the latent heat of fusion measure? O A. The energy required to heat a substance
O B. The energy required to form a substance
O c. The energy required to melt a substance
O D. The energy required to boil a substance

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

An observation that requires measurement is called quantitative observable or qualitative

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box