Which of the following is an example of subjunctive verb mood?
(1 point)
Responses
Going outside in your bare feet could make you cold.
Will you go away?
If I make the baseball team, I will skip around the field.
The bread was old and crusty.
If I make the baseball team, I will skip around the field.
Which of the following is an example of indicative verb mood?
(1 point)
Responses
If his parents let him, he will come outside to play.
If his parents let him, he will come outside to play.
Open the door for the old lady.
Open the door for the old lady.
I believe you should have a 60's themed birthday party.
I believe you should have a 60's themed birthday party.
We had spaghetti for dinner.
We had spaghetti for dinner.
We had spaghetti for dinner.
How is this text formatted?
(1 point)
Responses
italicized text
italicized text
bold text
bold text
underlined text
underlined text
a change in the font face
The text is not formatted in any specific way.
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
10
10
15
15
20
20
30
30
Which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction?(1 point)
Responses
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 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 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 stick of butter. Heat the butter until it melts. Find the mass of the melted butter.
Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
What is always true according to the Law of Conservation of Matter?(1 point)
Responses
New molecules cannot be formed from the reactants during a chemical reaction.
New molecules cannot be formed from the reactants during a chemical reaction.
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.
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.