Chemistry & Photosynthesis

Atoms that are bonded together share which of the following?

• Hydrogen ions

• Protons

• Electrons

• Carbon bonds

Tags

NGSS.MS-PS1-1

The image represents which of the following

• Hydrogen

• Oxygen

• An atom

• An electron

Tags

NGSS.MS-PS1-1

True or False. The electrons of an atom are positively charged?

• True

• False

Answer explanation

Electrons are negatively charged they are the green ones in the rings with the negative sign on them. Protons are the positive ones.

In the image the atoms all have the same number of protons therefore...

• they will not be able to bond to each other.

• they will have to share electrons.

• they are the same element.

• they are going to react violently with one another.

Answer explanation

Protons are what you look at to tell if you have the same element. Same number of protons = same element.

Tags

NGSS.MS-PS1-1

True or False. Oxygen can change states of matter (be a liquid or be a gas) depending on what other elements it is bonded to.

• True

• False. Oxygen will always be a gas.

Answer explanation

Oxygen can be a gas when it is bonded to itself as O₂ it is actually the molecule we need to breath to stay alive. However, when it is bonded to two hydrogen molecules H₂O then in this case it can be a liquid oven even a solid depending on temperature.

Tags

NGSS.MS-PS3-4

Where is the energy stored in ATP?

• The Ribose Group

• The Adenine Group

• ADP

• The Phosphate Group

Which bond of the ATP molecule is broken in order to release energy?

• A
• B
• C
• D

Tags

NGSS.MS-LS1-7

Increasing the intensity of light had what effect on photosynthesis?

• It slowed it down

• It sped up

• It stayed the same

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which wavelengths of light do chlorophyll absorb the best

• Green and red

• Green and blue

• Red and blue

• Red green and blue

Tags

NGSS.MS-LS1-6

Which of the following equations represents the overall chemical reaction for photosynthesis?

• 6O₂+ 6H₂O → C₆H₁₂O₆+ 6O₂

• C₆H₁₂O₆ + 6H₂O→ 6O₂+ 6O₂

• 6CO₂+ 6H₂O→ C₆H₁₂O₆+ 6O₂

• 6O₂ + 6H₂O→ C₆H₁₂O₆ + 6CO₂

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

NGSS.MS-LS2-3