If gold gets hot enough it will melt, what type of change is this?
a. physical
b. chemical
c. physical and chemical

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass