Answer:
The answer to your question is:
Explanation:
Ionic bonding is formed between a metal and a nonmetal.
Covalent bonding is formed between two nonmetals.
From the elements given:
Ionic bonding : Ca and O
Ca and S
K and O
K and S
Covalent bonding: S and O
Answer: Physical changes are related to physical properties since some measurements require that changes be made. Melting Point: As solid matter is heated it eventually melts or changes into a liquid state at the melting point. Ice (a solid form of water) melts at 0 oC and changes to the liquid state.
Explanation:
Answer:
an ion with charge of 2+
Explanation:
proton and electron numbers do not cancel out...
it has 2 more protons than electrons.
since protons carry a positive charge, a charge of 2+ is now carried by the ion.
it is no longer called an atom as the charges do not cancel out.
Answer:
5.13×¹⁴ Hz
Explanation:
The following data were obtained from the question:
Energy (E) = 3.4×10¯¹⁹J
Frequency (f) =?
Energy and frequency are related by the following formula:
E = hf
Where:
E is the energy.
h is the Planck's constant.
f is the frequency.
Thus, we can obtain the frequency of the photon by using the above formula as illustrated below:
Energy (E) = 3.4×10¯¹⁹J
Planck's constant (h) = 6.63×10¯³⁴ Js
Frequency (f) =?
E = hf
3.4×10¯¹⁹ = 6.63×10¯³⁴ × f
Divide both side by 6.63×10¯³⁴
f = 3.4×10¯¹⁹ / 6.63×10¯³⁴
F = 5.13×¹⁴ Hz
Thus, the frequency of the photon is 5.13×¹⁴ Hz.
Answer:
B. The population will decrease due to a decrease in sea ice to hunt from in the arctic.
Explanation:
Since the ice the bears use to hunt is disappearing, it will be harder for the bears to hunt.