Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chemical Reactions

Chapter 7 Chemical Reactions

QuestionAnswer
A ________ ____________ is a representation of a chemical reaction in which the reactants and products are expressed as formulas. Formula Equation
________ are the substances that enter into a reaction. Reactants
The _______ is the new substance formed as a result of the chemical reaction. product
Write the Law of Conservation of mass Mass cannot be created nor destroyed.
What is the coefficient? full-sized number located in the front of the molecule
Identify the coefficient in this example: 2Na₂SO₄ 2
Identify the coefficient in this example: 5HCl 5
Count atoms for this example: MgBr₂ Mg- 1 Br- 2
Count the atoms for this example: Cu(NO₃)₂ Cu- 1 N- 2 O- 6
Define chemical energy energy that is stored in chemicals
Explain what is happening during a chemical reaction A system of chemical changes that involve breaking and reforming of bonds to create a new substance
Reaction that occurs when energy is absorbed from surrounding in the form of heat Endothermic
Reaction where energy is released from the system into the surroundings Exothermic
List 5 things that can affect the reaction rate of a chemical Concentration Temperature Phase and Surface area Solvent Catalyst
A substance that participates in a chemical reaction and increases the reaction rate without undergoing a net chemical change itself Catalyst
Identify and balance the following reaction: HgO ➡ Hg + O₂ Decomposition 2HgO ➡ 2Hg + O₂
Identify and balance the following reaction: KClO₃ → KCl + O₂ Decomposition 2KClO₃ → 2KCl + 3O₂
Identify and balance the following reaction: C + H₂ → CH₄ Synthesis C + 2H₂ → CH₄
Identify and balance the following reaction: CuCl₂+ H₂S → CuS + HCl Double Replacement CuCl₂+ H₂S → CuS + 2HCl
Identify and balance the following reaction: PbO + C -→ Pb + CO₂ Single Replacement 2PbO + C -→ 2Pb + CO₂
Identify and balance the following reaction: Na₂O + H₂O → NaOH Synthesis Na₂O + H₂O → 2NaOH
Identify and balance the following reaction: CH₄ + O → CO₂ + H₂O Combustion CH₄ + 4O → CO₂ + 2H₂O
Identify and balance the following reaction: Cl₂ + NaBr → NaCl + Br₂ Single Replacement Cl₂ + 2NaBr → 2NaCl + Br₂
Identify and balance the following reaction: BaCl₂ + Na₂SO₄ → NaCl + BaSO₄ Double Replacement BaCl₂ + Na₂SO₄ → 2NaCl + BaSO₄
Identify and balance the following reaction: C₆H₁₂O₆ + O₂ → CO₂ + H₂O Combustion C₆H₁₂O₆ + O₂ → 6CO₂ + 6H₂O
Convert from word to a formula equation and balance: C₁₀H₈ burns in the presence of oxygen (diatomic) and produces carbon dioxide and water. C₁₀H₈ + 12O₂ ➡ 10CO₂ + 4H₂O
Convert from word to a formula equation and balance: Lithium and chlorine react to form lithium chloride 2Li + Cl ➡ Li₂Cl
Convert from word to a formula equation and balance: hydrogen peroxide (H₂O₂) breaks down to form water and diatomic oxygen. H₂O₂ ➡ 2H₂O + O₂
Convert from word to a formula equation and balance: zinc reacts with hydrochloric acid (HCl) to produce zinc chloride and diatomic hydrogen 2Zn + 2HCl ➡ 2ZnCl + H₂
Created by: aemiller