What are the states of matter

Answers

Answer 1

Answer: solid, liquid, gas, and plasma.

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What are 3 things an Apple, Knife and Mirror have in common?

Answers

1)They are all take up space.
2)They all have mass.
3)They are all solids.

Because of 1 and 2, they are all matter.

Carbon has four valence electrons, and chlorine has seven valence electrons. If carbon covalently bonds with chorine, which of the following would represent the Lewis dot (electron dot) structure?

Answers

Answer: The correct answer is Image 3.

Explanation:

Lewis dot structure is defined as the structure which represents the number of valence electrons around the atom. The electrons are represented as dots.

From the structure, we can easily determine the number of bonding and non-bonding electrons. Non-bonding electrons are considered as lone pair of electrons.

Carbon is the 6th element of the periodic table having electronic configuration of $1s^22s^22p^2$

This element has 4 valence electrons.

Chlorine is the 17th element of the periodic table having electronic configuration of $1s^22s^22p^63s^23p^5$

This element has 7 valence electrons.

The lewis dot structure for the compound $CCl_4$ is given below in the image attached.

Hence, the correct answer is Image 3.

1. It is wrong because each chlorine atom should have 3 lone pairs
2. It is wrong because carbon only has four valence electrons
3. It is correct because each chlorine has 3 lone pairs and carbon has 4 electrons covalently bonded with chlorine
4. It is wrong because chlorine only has 7 valence electrons and therefore it cannot have 3 lone pairs and 2 bond pairs for each of C-Cl bonds

Compare and contrast a chemical reaction and a nuclear reaction.

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a nuclear reaction is unstable and gives off by products while a chemical reaction is just a reaction between stable compounds/elements

During fusion, the hydrogen in the Sun is?a. entirely converted to energy.

b. entirely converted to helium.

c. partially converted to energy.

d. partially converted to deuterons.

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i am not sure but i think the answer is no C

it is c partially converted to energy

Is the following a chemical change or a physical change? A pencil is sharpened in a pencil sharpener, leaving behind shaving. Physical Change Chemical Change

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This is an example of physical change, because the pencil's chemical composition does not change.

*Physical Change.*
A physical change in a substance doesn't change what the substance is.
A Chemical change, there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

mixture or pure substance: 1.blood 2.dyes 3.self-raising flour 4.muesli 5.copper wire 6.distilled water 7.table salt 8.milk 9.bronze 10.tea 11.oxygen 12.air

Answers

Answer: Mixture: Blood , Self raising flour,muesli ,dyes, milk, tea, air, bronze

Pure substance: Copper wire, distilled water, table salt, oxygen.

Explanation:

Mixture is a substance which is made up two or more number of compounds which chemically inactive and retain their distinct chemical properties.

Blood , Self raising flour,muesli ,dyes, milk, tea, air, bronze

Pure substance is defined as anything with uniform and unchanging composition is known s pure substance.

Copper wire, distilled water, table salt, oxygen.

Other Questions

Quantum theory states that _____. A. electrons orbit the nucleus of an atom B. electrons cannot be created or destroyed C. electrons have both wave-like and particle-like properties D. the exact position of an electron within an atom can be calculated

The ph of a 0.001 m hcl solution is closest to a. 1 b. 7 c. 3 d. 10

which sample, when dissolved in 1.0 liter of water, produces a solution with the highest boiling point?

When a chemical reaction occurs, the physical and chemical properties of the reactants are the same as the properties of the products.True or False??