Are all these a chemical change

Burn

Dissolve

Rust

Explode

Which kind of cloud touches the ground making it hard to see

Did Thompson's experiments lead to the discovery of neutrons?

Structures that trap light energy and perform photosynthesis

4. Why is this a double replacement reaction? HCl+Fes - FeCl+H2S

Select all that apply. Refer to the following table for information about gold and mercury. Then choose which statements are true about equal sample sizes of the metals. Element specific heat density gold 0.031 19.3 mercury 0.033 13.5 A.

Gerry is looking at salt under a powerful microscope and notice a crystalline structure. what can be known about the salt sample that Gerry is looking at

The kinetic energy of a moving object is equal to the work required to bring it to its speed from rest, or the work the object can do while being brought to rest.

Imagine standing on a bathroom scale and reading your weight. now lift one foot and read your weight again. does the scale read more, less or the same weight when you are standing on one foot?

The period T of a simple pendulum depends on the length L of the pendulum and the acceleration of gravity g (dimensions L/T^2). (a) Find a simple combination of L and g that has the dimensions of time.

What is an example of the theory that the best adapted organisms for an environment are the ones most likely to survive