Which of these observations would be classified as a physical property a: lemon juice cleans a penny b: a candle burns brightly c: baking soda in vinegar forms bubbles d: a cube of gold is hammered into a thin sheet

Achemist determined by measurements that 0.0300 most of beryllium oxide participate in a chemical reaction calculate the mass of berlylium oxide that participates

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

What best discribes the relationship between wavelength and frequency in a electromagnetic wave