Answer;
Electromagnetic wave
Explanation;
Electromagnetic waves are waves that do not require a material medium for transmission, they include, x-rays, gamma rays, visible light etc.
Answer:
Here's what I get
Explanation:
1. Nickel sulfate
base + acid ⟶ salt + water
NiSO₄ is a salt of the base Ni(OH)₂ and the acid sulfuric acid.
Hydroxides of transition metals are insoluble; most sulfates are soluble.
2. Carbonate + acid
Most carbonates are insoluble.
They react with acids to form carbonic acid (H₂CO₃), which decomposes into water and carbon dioxide.
Mass is always conserved in a physical change. Energy may be released or absorbed when a substance changes from one physical state to another. In a chemical change, a chemical reaction yields a completely new substance. A substance's particles are changed during a chemical reaction.
Across the period
Explanation:
Among the element of the main group, the first ionization energy increases across the period.
- The energy required to remove an electron from an atom is called ionization energy.
- The first ionization energy is the energy needed to remove the most loosely bound electron of an atom in the gas phase.
- The ionization energy measures the readiness of an atom to lose an electron.
The magnitude of the ionization energy depends on nuclear charge, atomic radius, sublevel accomodating the electron and the special stability of filled and half-filled sublevels.
Generally, ionization energy increases progressively from left to right due to the decreasing atomic radii.
Down a group, it decreases because atomic radii is increasing
Learn more:
Ionization energy brainly.com/question/1971327
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Answer:
Different elements emit differently colors of light because when electrons return to the lower energy levels, they emit energy in a different form of light
Explanation: