Which of the following observations likely describes a physical change?

The group number for alkali metals

A chef has decided that she will only cook in a way that does not alter the chemical make-up of food. Following these guidelines, which of the following foods can she prepare? A. toasted bread B. scrambled eggs C. milkshakes D. cake

What type of reaction is displayed below? AgNO3  +  KI → KNO3  +  AgI A. double replacement B. decomposition C. synthesis D. single replacement

Is turning on a light bulb a physical and chemical change?

A solution was formed by combining 25.0 g of solid a with 60.0 ml of distilled water, with the water initially at 21.4 °c. the final temperature of the solution was 25.3 °c.

What is the Celsius equivalent of 212°f

Identify the characteristics of tornadoes and hurricanes

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?