CIA # 2 Study Guide

Based on the law of conservation of mass, fill in the correct mass in the equation below: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) 50 g + 25 g → 30 g + ___ g

• 45 g

• 50 g

• 55 g

• 60 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2. First, balance the reactions. Then determine what type of reaction is shown. ___ NaBr + ___ H3PO4 → ___ Na3PO4 + ___ HBr Type of reaction: ________________________

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

First, balance the reactions. Then determine what type of reaction is shown.

​ (a)   N2 + _​ (b)   H2 → ​ (c)   NH3 Type of reaction:

(d)   ​

• Synthesis
• Decomposition

• Single Replacement

• Double Replacement

• 1
• 3
• 2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2. First, balance the reactions. Then determine what type of reaction is shown. ​ (a)   Mg + ​ (b)   Fe2O3 → ​ (c)   Fe + ​ (d)   MgO Type of reaction: ​ (e)  

• Synthesis

• Decomposition

• Double displacement

• Single Displacement
• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3. What type of reaction is shown in the figure below?

• Synthesis reaction

• Decomposition reaction

• Single replacement reaction

• Double replacement reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4. S(s) + O2(g) → SO2 this is a ____________ type of reaction

• Decomposition

• Synthesis

• Single Replacement

• Double Replacement

Given the following chemical reaction: CaCl₂ + Na₂SO₄ → CaSO₄ + NaCl, reactants = 300.23 g, products = 300.23 g. What is the mass of the products? What evidence a chemical reaction took place?

• New substance were formed

• The mass remained the same

• The products remained in a liquid state

• No reaction took place

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Signs that a Chemical Reaction has occurred:

B- ​ (a)   C- ​ (b)   O- ​ (c)   S- ​ (d)   T- ​ (e)  

• Taste Change
• Sound Emission
• Magnetic Field Change
• Bubbles
• Color Change
• Odor
• Solid
• Temperature

Tags

NGSS.MS-PS1-2

Subscripts in a chemical formula indicate:

• The number of atoms of each element in a molecule

• The type of chemical bonds present

• The total mass of the compound

• The charge of the ions involved

Tags

NGSS.MS-PS1-1

Which of the following best describes a chemical formula?

• the number of atoms of each type of element present in a molecule

• the number of units of each substance in a reaction

• which substances are about to react

• which substances are formed by a reaction