1. In the reaction: 4Li (s) + O₂(g) → 2Li₂0 (s) a. what is the product? Liao(s) b. what are the reactants? 25 cô (3) c. what does the "(s)" after the formula of lithium oxide signify? Phase= Solid d. what is the coefficient of the lithium metal? e. in what phase is the lithium oxide? Solid E. Define "chemical reaction". process in which one or more substances reactants) are changed. substance products).

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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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I need help number 1 part d. 

Topics:
Balancing Equations
● Writing a chemical equation
Practice:
1. In the reaction: 4Li (s) + O₂(g) → 2Li₂0 (s)
a. what is the product?
Liao(s)
b. what are the reactants?
Lis
Stoichiometry
c. what does the "(s)" after the formula of lithium oxide signify?
Phase: Solid
d. what is the coefficient of the lithium metal?
e. in what phase is the lithium oxide?
Solid
2. Define "chemical reaction".
A process in which one or more substances (reactants) are changed into 1 or more other
substance products).
-Ionic or covalent bonds are made and/or broken, and a new substance is made
3. List the observations that are evidence of a chemical reaction:
-Color Change, formation of a new phase, a new odor, a temperature chame,
emission light, or appearance of flame.
4. Write and balance the chemical equation that relates to each of the following word equations:
Remember that some elements exist as diatomic molecules (oxygen, nitrogen, hydrogen, halogens).
a. solid zinc metal + oxygen gas → solid zinc oxide
22n(s) + O2(g) →→2 Zn 06)
b. HCl (aq) + magnesium hydroxide (aq) → magnesium chloride (aq) + water
2 HCl(aq) + Mg(OH)₂(aq) → MgCl2(aq) + 2 H₂0)
c. HNO3(aq) + calcium hydroxide (s)→ calcium nitrate (aq) + water
2. HNO3(92) + Ca(OH) 2 (s)->Ca(NO3)2(aq) + 2 H₂O(1)
Transcribed Image Text:Topics: Balancing Equations ● Writing a chemical equation Practice: 1. In the reaction: 4Li (s) + O₂(g) → 2Li₂0 (s) a. what is the product? Liao(s) b. what are the reactants? Lis Stoichiometry c. what does the "(s)" after the formula of lithium oxide signify? Phase: Solid d. what is the coefficient of the lithium metal? e. in what phase is the lithium oxide? Solid 2. Define "chemical reaction". A process in which one or more substances (reactants) are changed into 1 or more other substance products). -Ionic or covalent bonds are made and/or broken, and a new substance is made 3. List the observations that are evidence of a chemical reaction: -Color Change, formation of a new phase, a new odor, a temperature chame, emission light, or appearance of flame. 4. Write and balance the chemical equation that relates to each of the following word equations: Remember that some elements exist as diatomic molecules (oxygen, nitrogen, hydrogen, halogens). a. solid zinc metal + oxygen gas → solid zinc oxide 22n(s) + O2(g) →→2 Zn 06) b. HCl (aq) + magnesium hydroxide (aq) → magnesium chloride (aq) + water 2 HCl(aq) + Mg(OH)₂(aq) → MgCl2(aq) + 2 H₂0) c. HNO3(aq) + calcium hydroxide (s)→ calcium nitrate (aq) + water 2. HNO3(92) + Ca(OH) 2 (s)->Ca(NO3)2(aq) + 2 H₂O(1)
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