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🧪 Chemistry

Chemistry is the scientific study of the properties and behavior of matter. It is a natural science that covers the elements that make up matter to the compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.

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Q: Do nails rust in the cold
2 answers
Q: If food is digested is it a physical or chemical change
2 answers
Q: What is the Equation for when carbonate reacts with acid
2 answers
Q: What is the most likely oxidation state of aluminum (Al)
1 answer
Q: What is the element name for He
1 answer
Q: What is a reactant in the Calvin cycle
1 answer
Q: What If the pH of a solution is 10.7 what would the pOH be
1 answer
Q: What allows electrons to move through it easily
1 answer
Q: What Are Clues That A Chemical Reaction That A Chemical Reaction May Have Taken Place
1 answer
Q: What particle has no charge and is found in the nucleus of an atom
1 answer
Q: Distinguish between homogeneous and heterogeneous mixtures
1 answer
Q: What does the half-life of a radioisotope correspond to
1 answer
Q: What is oxidation state of Cl in HCIO3
1 answer
Q: What is used to identify acids and bases
1 answer
Q: What is a qualitative observation
6 answers
Q: Particles of a liquid
1 answer
Q: Isotopes do not have the same number of which of these-
2 answers
Q: Which of the following is an acid - ammonia - potassium hydroxide - sulfuric acid - lithium hydroxide
1 answer
Q: If you spill a chemical on yourself the first thing to do is tell the teacher
1 answer
Q: Who is the scientist involved in the periodic table
1 answer
Q: Characteristics of a molecular substance
1 answer
Q: Why is finding density of gas difficult
1 answer
Q: What is exothermic reation
1 answer
Q: Reactions that require energy in the form of heat are called .
1 answer
Q: Which of these terms means being capable of bending without breaking
1 answer
Q: What is revealed in the reaction CaOH2s Ca2 aq 2OH-aq
1 answer
Q: What volume will 3.12 moles of SF6 gas occupy if the temperature and pressure of the gas are 141 degree celsius and 7.77 ATM
1 answer
Q: Why does the handle of a metal spoon get hotter than a wooden spoon would
1 answer
Q: What information does the pH of a solution give
1 answer
Q: Is the volume of a gas always the volume of its container
1 answer
Q: What has the greatest radius Cs Fr K Li
1 answer
Q: Which of the following is a mixture but not a solution
2 answers
Q: How is an endothermic reaction indicated in an equation apex
1 answer
Q: What family of elements contains the most active nonmetals
1 answer
Q: What separation technique involves using different boiling points
1 answer
Q: What of the following is a characteristic of a metallic
1 answer
Q: What is differencebetween atom and molecule
1 answer
Q: According to the phase diagram for H2O what happens to the phases of water at 0.5 ATM pressure as the temperature is decreased from 110 C to -10 C
1 answer
Q: How many grams are in three moles of HF
1 answer
Q: What kind of change occurs when salt dissolves in water chemical or physical
1 answer
Q: What is specific heat capacity and what is the formula for specific heat capacity
1 answer
Q: Choose a element that is most active Ca Cu Li Au
1 answer
Q: How many electrons do calcium has
1 answer
Q: What type or resources such as fossil fuels fresh water and soils are being used up degraded by humans
1 answer
Q: Is smog homogenous heterogeneous
1 answer
Q: Are diatomic elements are generally stable.
1 answer
Q: Is sodium hydroxide or lemon juice more acidic
1 answer
Q: What molecule most likely has the greatest amount of stored energy in its bonds
1 answer
Q: How are oxidation states if transition metals indicated in the names of metal compounds
1 answer
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