4. A (n) __is. polar. at one end and nonpolar at the other. it starts with an e

Classify these substances as acidic, basic, or neutral: Vinegar, baking soda, tomato juice, sugar A. Vinegar - acidic Baking soda - basic Tomato juice - acidic Sugar - neutral B.

Butter melt when you heat it in a pan on the stove. Is this a chemical change or physical change? How can you tell?

Elements named after mythological beings

Which item is made from a synthetic material? cotton pants leather jacket tissue paper wicker basket

Calculate ΔrG∘ at 298 K for NH3 (g) + HBr (g) →NH4Br (s)

A student makes observations when water is added to a blue solution of copper sulfate. The student makes only 1 observation: the solution changes to a lighter shade of blue. Is this an example of a chemical reaction? Explain your reasoning.

When dos the spring tide occur

As ice transforms into steam, Question options: new molecules are formed. the types of atoms are changed. energy is absorbed by the molecules. the mass of the molecules is increased.

Why do chemists consider the periodic table so useful?

Plates include large sections of Earth Oceanic or Continental