Answer: D. calcium chloride
Explanation:
In reaction equations, reactants are on the left side of the arrow and products are on the right side of the arrow. So, our reactants are the elements calcium and chlorine, and our product is the compound calcium chloride.
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In the given chemical reaction equation, the product is calcium chloride as it is formed from the reaction of calcium and chlorine.
In a chemical reaction, substances that are formed as a result of the reaction are known as products. In the given chemical equation, calcium (Ca) reacts with chlorine (Cl2) to produce calcium chloride (CaCl2). Therefore, in this reaction equation, the product is calcium chloride. The reactants, substances that exist before the reaction, are calcium and chlorine. So, the correct answer to your question is D. calcium chloride.
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- Elements are made of atoms with the same atomic number.
- Elements cannot be separated using ordinary chemical means.
- Elements may be represented by chemical symbols.
- Elements are made of two or more different types of atoms.
Answer:
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Explanation:
Answer:
B C and D
Explanation:
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(2) hard-sphere model, electron-shell model, wave-mechanical model
(3) electron-shell model, wave-mechanical model, hard-sphere model
(4) electron-shell model, hard-sphere model, wave-mechanical model
Answer:2
Explanation:
HARD SPHERE MODEL
According to Dalton he viewed atoms as tiny, solid balls. His atomic theory had four statements which are:
1. Atoms are tiny, invisible particles.
2.Atoms of one element are all the same.
3.Atoms of different elements are different. 4.Compounds form by combining atoms.
ELECTRON SHELL MODEL
Bohr modified Rutherfords model of the atom by stating that electrons moves around the nucleus in orbit fixed sizes and energies.
WAVE MECHANICAL MODEL
Erwin states that electrons do not move in set path around the nucleus but in waves. He said it is impossible to know the exact point of an electron instead we have clouds of probability called the clouds.
b. only in liquids.
c. only in air.
d. from an area of high concentration to an area of low concentration.
Answer:
d. from an area of high concentration to an area of low concentration.
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