Which indicator of a chemical change is shown?

A science glass with smoke coming out the top

formation of a gas.

Formation of a precipitate.

Change in energy.

Change in color.

Which of the following definitions characterizes an element? Question 2 options: A) contains a basic combination of two or more substance B) contains only one type of atom C) can only be broken down by chemical means D) can be separated through

Increasing the concentration of a reactant speeds up a reaction. True False

What is the charge on an atom after it loses an electron during the formation of a bond?

The alcohol content of hard liquor is normally given in terms of the "proof," which is defined as twice the percentage by volume of ethanol (C2H5OH) present. Calculate the number of grams of alcohol present in 1.00 L of 48-proof gin.

HCl + KOH - --> KCl + H20 hOw many moles of HCl required to produce 5.59 x 10-3 moles of KCl?

How does heat transfer takes place between any two systems?

Hydrate name of CaCl2 * 8 H2O

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide

Which stament best describes a solution

Which answer accurately describes the difference between speed and velocity? Read each answer choice carefully. Question 4 options: A. If speed is constant, then velocity is also constant. B. Speed requires direction.