Physical change is one that affects the physical properties of a substance true or false

Deduce the charge on the dichromate ion in Ag2Cr2O7. The charge on a silver ion is + 1.

If a rocket goes from 2,000 m/s to 6,000 m/s in 8 seconds, what is the acceleration for that time frame?

What is the amount, in moles, of each elemental sample? a. 11.8 g Ar b. 3.55 g Zn c. 26.1 g Ta d. 0.211 g Li

Which type of heat transfer involve heat flow from hot object to colder object A. convection, but not conduction and radiation B. convection and radiation, but not conduction, convection and conduction, but not radiation D. all of three

On a hot day, the beach sand gets hot, but the water stay cool. Would you predict that the specific heat of sand is higher or lower than that of water?

The atomic mass of fluorine in 19.0 amu, so the molar mass is?

A rod shaped organism with no nucleus commonly found in Garbage will most likely belong to which kingdom

Alka-Seltzer is a solid mixture of two substances, sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7). The substances react to form water, carbon dioxide (CO2), and Na3C6H5O7.

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