When a piece of cadmium (Cd) is placed a solution of nickel chloride (NiCl2), the following reaction occurs: Cd (s) + NiCl2 (aq) → CdCl2 (aq) + Ni (s) During this reaction cadmium (Cd) atoms are converted to Cd2+ ions while Ni2+ ions are converted to nickel (Ni) atoms. Use the equation above to answer the following questions. 1. Cadmium solid consists of neutral atoms. Give the number of protons and electrons in a cadmium atom. _____ protons ______electrons 2. Cadmium atom is a (neutral or charged) particle 3. CdCl2 contains Cd2+ ions. Give the number of protons and electrons in a Cd2+ ion _____ protons _______electrons
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
QUESTION 2
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When a piece of cadmium (Cd) is placed a solution of nickel chloride (NiCl2), the following reaction occurs:
Cd (s) + NiCl2 (aq) → CdCl2 (aq) + Ni (s)
During this reaction cadmium (Cd) atoms are converted to Cd2+ ions while Ni2+ ions are converted to nickel (Ni) atoms. Use the equation above to answer the following questions.
1. Cadmium solid consists of neutral atoms. Give the number of protons and electrons in a cadmium atom.
_____ protons ______electrons
2. Cadmium atom is a (neutral or charged) particle
3. CdCl2 contains Cd2+ ions. Give the number of protons and electrons in a Cd2+ ion
_____ protons _______electrons
4. Cadmium ion is a (neutral or charged) particle
5. Cd atoms are (losing or gaining ) two electrons.
6. Cd atoms are being (oxidized or reduced).
7. Ni2+ ions are (losing or gaining ) two electrons.
8. Ni2+ ions are being (oxidized or reduced).
9. According to the reaction above, Cd is a (more or less) active metal than Ni.
10. Cadmium (Cd) would be located (above or below ) nickel (Ni) on the “activity series”.
11. Would you expect a reaction to occur if a piece of nickel (Ni) is placed in a solution of cadmium(II) chloride (CdCl2)? (Yes or No)
Ni (s) + CdCl2 (aq) --> ?
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I was just wondering why their is a 2e-? like where did it come from
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