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Y_Kistochka [10]
3 years ago
5

7th Grade Vocabulary Quiz

Chemistry
1 answer:
Diano4ka-milaya [45]3 years ago
7 0

Answer:

1.Nucleus  2.Cytoplasm 3. Vacuoles 4.chloroplasts 5. Body Cell 6. Cell Wall 7. Membrane

Explanation:

  1. The nucleus is the control center of the cell.
  2. The jelly-like substance inside the cell is called as cytoplasm.
  3. They are found in both animal and plant cells but are much larger in plant cells.
  4. In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll.
  5. The rest of the air is mostly nitrogen (79%). Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar.
  6. Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane.
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Which of the following statements best describes why carbon can form a variety of organic compounds? Carbon atoms bond readily w
olga_2 [115]
Answer:
            <span>Carbon readily forms covalent bonds with other carbon atoms.

Explanation:
                   As we know approximately more than 95 % compounds, either isolated, discovered or synthesized belongs to organic compounds containing carbon atoms.
                  This great diversity of organic compounds is due to following facts.

1) Catenation:
                      Carbon has a peculiar behavior of self linkage. This self linkage of one carbon with another is called as catenation. In this way carbon can form a long chain of carbon atom. A branching can also take place when one carbon is bonded further to three of four carbon atoms.

2) Isomerism:
                     Secondly the carbon containing compounds show isomerism. In which molecular formula is same but structural formula is different. For example molecular formula C</span>₅H₁₂ can make following compounds,

                                a)  n-Pentane

                                b)  2-Methylbutane

                                c)  2,2-Dimethylpropane

3) Multiple Bonds:
                            Carbon can form multiple bonds i.e double bond like in alkenes and triple bonds like in alkyne. 

Due to these factors carbon gets very high number of opportunities to form large number of compounds.
7 0
3 years ago
Heating a substance____the speed at which molecules move
guapka [62]

Answer:

Heating a substance increases the speed at which molecules move.

Explanation:

4 0
3 years ago
Read 2 more answers
Q7-A graduated cylinder is filled to the 12.0 mL line with water. A solid with a mass of 14.52 g is placed in the graduated cyli
Tems11 [23]

Answer:

If it served you, give me 5 stars please, thank you!

<h3><u>c) 13.29 mL</u></h3>

6 0
2 years ago
Identify the type of energy involved in each step:
Agata [3.3K]
Radiant energy or electrical energy
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3 years ago
Complete the following precipitation reactions with balanced molecular, total ionic, and net ionic equations:
Dmitry [639]

Molecular equation

Hg₂(NO₃)₂ (aq) + KI(aq) ⇒Hg₂I₂(s) + 2KNO₃(aq)

Total Ionic equation

Hg²⁺(aq) + 2NO³⁻(aq) + 2K⁺aq) ⇒Hg₂I₂(s) + 2K⁺(aq) + NO³⁻ (aq)

Net Ionic equation

Hg²⁺(aq) + 2I⁻(aq)  ⇒ Hg₂I₂(s)

<h3>What is the molecular equation?</h3>

Sometimes, a balanced equation is all that is used to refer to a chemical equation. Any ionic substances or acids are represented using their chemical formulas as neutral compounds in a molecular equation. Each substance's state is described in parenthesis after the formula. A complete ionic equation also contains the spectator ions, whereas a net ionic equation just displays the chemical species that are involved in a reaction.

The steps listed below can be used to determine the net ionic equation for a specific reaction:

Include the states of each chemical in the balanced molecular equation for the reaction.

To know more about the molecular equation, visit:

brainly.com/question/14286552

#SPJ4

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1 year ago
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