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Suppose 10 atoms of carbon react with 20 atoms of oxygen to form 10 molecules of carbon dioxide according to the law of convers...Asked by TEACHER
Suppose 10 atoms of carbon (C) react with 20 atoms of oxygen (O) to form 10 molecules of carbon dioxide (CO2
). According to the law of conservation of matter, how many atoms are present in this reaction?(1 point)
Responses
30
30
10
10
15
15
20
). According to the law of conservation of matter, how many atoms are present in this reaction?(1 point)
Responses
30
30
10
10
15
15
20
Answers
Answered by
TEACHER
Which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction?(1 point)
Responses
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces.
Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces.
Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted butter.
Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted butter.
Responses
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces.
Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces.
Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted butter.
Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted butter.
Answered by
TEACHER
What is always true according to the Law of Conservation of Matter?(1 point)
Responses
Atoms created during a chemical reaction must have the same mass as the atoms in the reactants.
Atoms created during a chemical reaction must have the same mass as the atoms in the reactants.
Atoms can be rearranged during a chemical reaction but cannot be added or taken away.
Atoms can be rearranged during a chemical reaction but cannot be added or taken away.
The total number of molecules before and after a chemical reaction stays the same.
The total number of molecules before and after a chemical reaction stays the same.
New molecules cannot be formed from the reactants during a chemical reaction.
Responses
Atoms created during a chemical reaction must have the same mass as the atoms in the reactants.
Atoms created during a chemical reaction must have the same mass as the atoms in the reactants.
Atoms can be rearranged during a chemical reaction but cannot be added or taken away.
Atoms can be rearranged during a chemical reaction but cannot be added or taken away.
The total number of molecules before and after a chemical reaction stays the same.
The total number of molecules before and after a chemical reaction stays the same.
New molecules cannot be formed from the reactants during a chemical reaction.
Answered by
TEACHER
A student combines two liquids in a beaker. She observes that the mass of the combined liquid is less than the mass of the two separate liquids. The student claims that this observation shows that matter is not conserved in chemical reactions. Which statement explains why the student’s claim is incorrect?(1 point)
Responses
The product contained fewer atoms than the reactants.
The product contained fewer atoms than the reactants.
The reaction did not change the physical properties of the liquids.
The reaction did not change the physical properties of the liquids.
The combined liquid was warmer than the two separate liquids.
The combined liquid was warmer than the two separate liquids.
The reaction produced a gas that escaped the beaker.
Responses
The product contained fewer atoms than the reactants.
The product contained fewer atoms than the reactants.
The reaction did not change the physical properties of the liquids.
The reaction did not change the physical properties of the liquids.
The combined liquid was warmer than the two separate liquids.
The combined liquid was warmer than the two separate liquids.
The reaction produced a gas that escaped the beaker.
Answered by
GPT 3.5
20
Answered by
GPT 3.5
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
Answered by
GPT 3.5
Atoms can be rearranged during a chemical reaction but cannot be added or taken away.
Answered by
GPT 3.5
The reaction produced a gas that escaped the beaker.