PC1.2 CP/PC1.4 ENH Review Conservation of a Mass
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Last updated 7 months ago
11 questions
Untitled Section
Required
12
Match the vocabulary word with its definition
Match the vocabulary word with its definition
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
(g) | arrow_right_alt | reaction and it's environment |
(s) | arrow_right_alt | quantity does not change |
anhydrate | arrow_right_alt | measures the number of atoms in a sample |
mass | arrow_right_alt | an observation of a feature |
state | arrow_right_alt | connects an observation to a process |
hydrate | arrow_right_alt | a substance before a chemical reaction |
identify statement | arrow_right_alt | a substance created by a chemical reaction |
reactant | arrow_right_alt | the number of atoms of each element in the product is equal to the number of atoms in the product |
product | arrow_right_alt | solid |
interpret statement | arrow_right_alt | gas |
system | arrow_right_alt | liquid |
conservation | arrow_right_alt | whether a substance is a solid, liquid or gas |
(l) | arrow_right_alt | a crystalline compound that contains water |
balanced chemical equation | arrow_right_alt | a compound formed from metal and nonmetal atoms |
salt | arrow_right_alt | a hydrate from which the water has been removed |
Required
4
How does mass and heat change in the different types of system
How does mass and heat change in the different types of system
Changes | Does Not Change | |
|---|---|---|
Mass in an open system | ||
Mass in a closed system | ||
Heat in a open system | ||
Heat in a closed system |
Interpreting Data from Chemical Reactions
Required
5
Match the identify statements with the features of the graph
Other Answer Choices:
The maximum mass is estimated to be 28.5 grams
The time is measured in hours
The mass stopped changing at 190 hours
The starting mass of the bracelet is 20 grams
The mass is measured in grams
Required
5
Match the interpret statements with the features of the graph
Other Answer Choices:
The bracelet increased in mass by 8.5 grams
The bracelet is light
At 190 hours no more atoms could be added to the surface of the bracelet
The bracelet contains 20 grams of silver
The chemical reaction is slow
Required
11
Complete a caption for the graph above
At the beginning of the reaction, the silver bracelet weighs _______ grams of silver. The final mass is _________ grams which means that ________ grams of atoms from the ______________ ( water or the oxygen) are added to the ____________ of the bracelet to form the black tarnish. The chemical reaction is very _________ . It takes ________ hours for the reaction to stop. Since the ______________ contains hydrogen atoms and ___________atoms , the product of the reaction is most likely a compound containing ___________ and hydrogen or oxygen. Because of the _____________ in mass, the graph indicates that this chemical reaction takes place in an _________system.
Other Answer Choices:
silver
8.5
28.5
increase
fast
surface
20
closed
temperature
decrease
reactants
open
oxygen
190
slow
Conservation of Mass Problems
Required
2
A sample of methane gas (CH₄) is burned in oxygen (O₂) according to the reaction:CH₄ (g) +2O₂ (g) → CO₂ (g) + 2H₂O (l)If 16 grams of methane is burned and the mass of carbon dioxide (CO₂) and water (H₂O) produced is 44 grams, how much oxygen was used in the reaction?
A sample of methane gas (CH₄) is burned in oxygen (O₂) according to the reaction:
CH₄ (g) +2O₂ (g) → CO₂ (g) + 2H₂O (l)
If 16 grams of methane is burned and the mass of carbon dioxide (CO₂) and water (H₂O) produced is 44 grams, how much oxygen was used in the reaction?
Required
2
A certain amount of sodium chloride (NaCl) is decomposed into sodium (Na) and chlorine gas (Cl₂) using electricity using: 2NaCl (s)→2Na (s) +Cl₂ (g)If the mass of sodium is 28 grams and the mass of the chlorine gas produced is 35 grams, what was the mass of sodium chloride at the start of the chemical reaction?
A certain amount of sodium chloride (NaCl) is decomposed into sodium (Na) and chlorine gas (Cl₂) using electricity using:
2NaCl (s)→2Na (s) +Cl₂ (g)
If the mass of sodium is 28 grams and the mass of the chlorine gas produced is 35 grams, what was the mass of sodium chloride at the start of the chemical reaction?
Required
2
Hydrogen gas (H₂) reacts with oxygen gas (O₂) to form water (H₂O) according to the reaction: 2H₂+O₂→ 2H₂OIf 4 grams of hydrogen gas is reacted with 32 grams of oxygen gas, how much water is produced?
Hydrogen gas (H₂) reacts with oxygen gas (O₂) to form water (H₂O) according to the reaction: 2H₂+O₂→ 2H₂O
If 4 grams of hydrogen gas is reacted with 32 grams of oxygen gas, how much water is produced?
Required
2
Nitrogen gas (N₂) reacts with hydrogen gas (H₂) to produce liquid ammonia (NH₃) according to the reaction: N₂ (g) +3H₂ (g) →2NH₃ (l).If 28 grams of nitrogen gas reacts with hydrogen gas, and the mass of ammonia produced is 34 grams, what is the mass of hydrogen gas used?
Nitrogen gas (N₂) reacts with hydrogen gas (H₂) to produce liquid ammonia (NH₃) according to the reaction:
N₂ (g) +3H₂ (g) →2NH₃ (l).
If 28 grams of nitrogen gas reacts with hydrogen gas, and the mass of ammonia produced is 34 grams, what is the mass of hydrogen gas used?
Required
1
A sample of methane gas (CH₄) is burned in oxygen (O₂) according to the reaction:CH₄ (g) +2O₂ (g) → CO₂ (g) + 2H₂O (l)If 32 grams of methane and 128 grams of oxygen react and produce 88 grams of carbon dioxide (CO₂), how much water is produced?
A sample of methane gas (CH₄) is burned in oxygen (O₂) according to the reaction:
CH₄ (g) +2O₂ (g) → CO₂ (g) + 2H₂O (l)
If 32 grams of methane and 128 grams of oxygen react and produce 88 grams of carbon dioxide (CO₂), how much water is produced?
Required
1
A hydrate is heated until all the water is released, the starting mass of the hydrate was 100 grams. The final mass of the hydrate is 68 grams. What was the mass of the water in the hydrate in grams?
A hydrate is heated until all the water is released, the starting mass of the hydrate was 100 grams. The final mass of the hydrate is 68 grams. What was the mass of the water in the hydrate in grams?