CER sentence starter

Chemistry

1 answer:

jonny [76]2 years ago

3 0

Answer:

CER all starts with a question asked by the teacher. This question is based on a phenomena or lab experience. The student's explanation or answer, as you may have guessed, will consist of three parts: a claim, the evidence, and the student's reasoning. A claim is a statement that answers the question. Start with a hook or attention getting sentence. Briefly summarize the texts • State your claim. Make sure you are restating the prompt. Include a topic sentence that restates your claim and your reason.

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What is the electronic structure of an atom with a proton number 11 and mass number 23

MAXImum [283]

Answer:

1s^2 2s^2 2p^6 3s^1

Explanation:

electron configuration of an element gives description of the distribution of electron in it's orbital of the atom, the superscript symbolize number of electron been hold by them.

The element here is sodium, which is a alkali metal

mass number =23

Number of proton= 11

electron must be seen in thelowest-energy subshell that is available in the the 3s orbital,

Hence, the electronic configuration is

1s^2 2s^2 2p^6 3s^1

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3 years ago

Classify the following materials as solid, liquid, or gas at room temperature: milk, helium, granite, oxygen, steel, and gasolin

saul85 [17]

At room temperature means in their original state without undergoing any changes.

At room temperature:
milk is liquid
helium is gas
granite is solid
oxygen is gas
steel is solid
gasoline is liquid

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3 years ago

How do you separate alcohol and water ?

alexgriva [62]

Answer:

liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points. When the mixture is heated, one liquid evaporates before the other.

Explanation:

hope this helps :3

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4 years ago

Solid substances are most likely to sublime if they have...?

tankabanditka [31]

Technically the are both right and wrong. Solid substances are most likely to sublime is they have... high vapor pressure and weak intermolecular forces.

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vladimir1956 [14]

Don’t click that!! :)

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3 years ago