The chemical change process whereby a molecule breaks down into simpler molecules or elements is called:

decomposition

endothermic

exothermic

a phase change

A recipe calls for 114 cups of sugar for every 3 cups of flour. How much sugar would be needed for 5 cups of flour?

Occurs when the moon moves between the Earth and Sun and blocks the light

Why does the planets keep moving

Which of the following is an example of vibrational kinetic energy? windmill, bouncing ball, pendulum, heat

Write the following measurements and scientific notation: 1. 800,000,000 m 2. 0.0015 kg

Four properties of water are listed. 1. It is colorless and odorless in its pure form. 2. It reacts with metals to form metal hydroxide and hydrogen gas. 3. When heated to 100 °C, water evaporates. 4. It decomposes to form hydrogen and oxygen.

Water is A. Acidic B. Basic C. Neutral

What variables affect the acceleration of an object and in what manner do they affect the acceleration?

How do valence electrons relate to the chemical reactions of an element?

What is the weighted-average mass of all known isotopes for an element