What makes an acid acidic? A Chemical structure B Number of protons in a molecule C State of matter D Temperature

lonic bonds usually form between two metals two nonmetals a metal and a nonmetal two anions

Which statement explains why carbon-14 dating cannot be used to date ancient rocks? Carbon-14 decays at a varying rate. Carbon-14 decays quickly leaving the amount too small to measure. Carbon-14 can be used only to date the remains of organisms. Carbon-14 has a hall-life that is much longer than potassium.

The 5 Empirical Observations of Chemistry 1. Color change 2. Gas production (bubbling, fizzing) 3. Formation of a precipitate (solid appears) 4. Temperature change (hotter or colder not caused by outside heating) 5. Emission of light (glow sticks, flames)

20. What are the small number in a chemical formula called? superscript coefficient subscript exponenets

5. A compound can only be broken down using __ changes. __

A zinc-coated (Zn) screw is placed in a test tube with a solution of silver nitrate $(AgNO_{3})$ Use an activity series to predict whether a single replacement reaction will occur. Complete the sentence. __ metal is more reactive than __ metal, so a single replacement reaction __ occur. Zinc __ silver __ will Zinc __ silver __ will not Silver __ zinc __ will Silver __ zinc __ will not

Two different isotopes of an element have different __ A numbers of neutrons B numbers of protons C atomic numbers D nothing is different about them

$CO_{2}(g)$ dissolving in water is what type of process? endothermic exothermic

$KBr+Cl_{2}\rightarrow KCl+Br_{2}$ Synthesis Decomposition Single Displacement Double Displacement Combustion

The correct formula for sulfur hezaoxide is $\square $