As a substance changes phase from a gas to liquid to solid:

A - The spacing between molecules increases.

B - It's density generally increases.

C - The spacing between molecules is not affected.

D - It undergoes chemical change.

How would you write and name the ions for tin?

There are several ways that a mutation may occur. Which of the following is not a way for a mutation to occur during the DNA replication (copying) process? A. Sections of genes can be removed. B. Sections of genes may be added. C.

What did JJ Thomson discover about atom? What did his atom model look like?

In this redox reaction identify the reducing agent 2MgO-> 2Mg+O2

What always occurs during a chemical reaction? A. A change in color. B. A change in shape. C. A change in energy. D. A change in state.

What is the best name for the molecule below? a compound with 10 total carbons with a double bond and the rest single bonds.

What Word means the gradual change and build up of organisms in an enviroment

If you see the Sun is high in the sky, what can you say about the SUN as viewed from the opposite side of Earth at the same moment?

What element has 8 valence electrons

Which of the following best describes a metal? Brittle, shiny, and solid Brittle, dull, and low density Malleable, shiny, and able to conduct heat or electricity Malleable, dull, and solid, liquid, or gas at room temperature?