Vanillin, a compound in vanilla bean, is used for flavoring ice cream. The chemical formula for this compound is C8H8O3.

What elements make up this compound? Check all that apply.

carbon

chlorine

helium

hydrogen

osmium

oxygen

Signal words most often used in a chronological essay are

Why does friction make it harder to move things?

About how fast are Earth's tectonic plates moving, on average? A. 0.2-0.5 cm/yr B. 2-10 cm/yr C. 50-100 cm/yr D. 10-20 m/yr

What type of energy is formed when chemical bonds are broken? A. Chemical energy B. Thermal energy C. Radiant energy D. Light energy

A layer of ethyl alcohol (n = 1.361) is on top of water (n = 1.333). To the nearest degree, at what angle relative to the normal to the interface of the two liquids is light totally reflected? a. 78 degree b. 88 degree c. 68 degree d. 49 degree e.

A body has translatory motion if it moves along a

What is Nothing. (sorry i have been wondering this for a very long time)

What is the weight of a 15kg dog on earth?

Identify the scenario below as to whether they increase, decrease, or not change the frequency in which a string vibrates and thus change its pitch. Assume that no other changes are happening. 1. Tightening a string for greater tension 2.

Explain what each of the following scientists contribute to the atomic theory