Chemical Reaction

Which of the following is an example of synthesis?

• Na + Br₂ --> NaBr

• KClO₃ --> KCl + O₂

• HgO + Cl₂-->HgCl + O₂

• Cl₂ + NaBr --> NaCl + Br₂

We know that matter can't be created or destroyed...so what has to happen in our model to "hatch" new water molecules like in this code?

• the source of the hydrogen and oxygen atoms needs to be "deleted" or "die" somewhere else in the code

• nothing--this model just keeps adding water to the reaction

Tags

NGSS.MS-PS1-5

Which prerequisite concept is present in this chunk of code?

• in a chemical reaction, at least one new substance is produced

• in a balanced equation, there must be an equal number of atoms on either side of the equation

• there needs to be enough energy and correct orientation during a collision for a reaction to occur.

• all of these

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which prerequisite concept is present in this chunk of code?

• There is a measurable energy change during a chemical reaction.

• In a chemical reaction, chemical properties are altered, but no atoms are created or destroyed.

• Many chemical reactions are reversible, and the forward and backward reactions can occur at the same time.

• none of these

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-7

Which prerequisite concept(s) is/are present as an abstraction in this chunk of code? (Select as many as are correct)

• In a chemical reaction, chemical properties are altered, but no atoms are created or destroyed.

• At least one new substance is created

• There is a measurable energy change during a chemical reaction.

• Many chemical reactions are reversible, and the forward and backward reactions can occur at the same time.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

NGSS.MS-PS3-5

What does this piece of code do?

• creates the original chloroplasts

• sets the shape of the chloroplasts

• sets the values for the number of initial carbon complexes and hydrogen ions

• all of these

Tags

NGSS.MS-LS1-6

Chemical Reaction consist of one or more_______ that will yield one or more new _______.

• elements; compounds

• reactants; products

• compounds; elements

• products; reactants

Tags

NGSS.MS-PS1-2

________are nature's biological catalyst, speeding up the rate of chemical reactions in the body.

What chemical reaction using water breaks down ATP into ADP to be used as energy by a life form?

What are the TWO types of energy that can be yield in a chemical reaction?

• Activation Energy

• Potential Energy

• Released Energy

• Absorbed Energy

• Kinetic Energy

Tags

NGSS.HS-PS1-4