1.COVALENT BOND [c] 2. Ionic bond [d] 3. Ionic bond [d] 4. a reaction where energy is released [b] 5. 2FE2C03=4FE=3CO2 [a] 6. The mass of reactant must be equal to the number of mass of the product [a] 7. Valence electrons [a] 8. Atomic number [a] 9. combustion [c] 10. More nitrogen in the nitrogen cycle [a]
Answer:
hope this helps
Explanation:
The elements in the modern periodic table are arranged in order of their atomic numbers, which is the number of protons in the nuclei of the atoms of a an element. Each element has a unique atomic number. The atomic numbers are also whole numbers.
In the veeeery distant future, our sun will transform into a red giant, and in the even more distant future, it will become a white dwarf.
B. applied mathematical reasoning to many astronomical theories
C. used mathematical calculations to discover the planet Neptune
were done by other people. For Newton himself, the ans is
A. proposed the elliptical orbit of the planets
Answer:
Explanation: there are three types of fossil fuels which can all be used for energy provision; coal, oil and natural gas. Coal is a solid fossil fuel formed over millions of years by decay of land vegetation. When layers are compacted and heated over time, deposits are turned into coal.
