Please just help with these few! Also, these are my answers.
Which statement accurately describes how electrons are arranged in Bohr's atomic model?
electrons travel randomly in the large space outside the nucleus
electrons travel around the nucleus in fixed energy levels with varying energies electrons travel around the nucleus in fixed energy levels with equal amounts of energy ***
electrons vibrate in fixed locations around the nucleus
Which statement about subatomic particles are true?
protons, neutrons, and electrons all have about the same mass ***
electrons have no mass, but protons and neutrons have mass
neutrons do not have a charge or mass
protons, neutrons, and electrons have a mass, but electrons have far less mass
Metallic bonds form between
cations and protons
anions and protons ***
cations and anions
Which of the following has the highest melting point?
metallic compound
ionic compound
covalent compound ***
cations and electrons
nope, nope, I dont like any of the answers, nope
Metallic bonds are the force of attraction between valence electrons and the metal atoms. It is the sharing of many detached electrons between many positive ions, where the electrons act as a "glue" giving the substance a definite structure. It is unlike covalent or ionic bonding.
For the first question, the accurate statement that describes how electrons are arranged in Bohr's atomic model is: "electrons travel around the nucleus in fixed energy levels with equal amounts of energy." This statement correctly represents Bohr's atomic model where electrons move in specific orbits around the nucleus at specific energy levels.
To answer this question, you need knowledge of Bohr's atomic model and its description of electron arrangement.
For the second question, the true statement about subatomic particles is: "protons, neutrons, and electrons all have about the same mass." All three particles - protons, neutrons, and electrons - have mass, but their masses are different with protons and neutrons having roughly the same mass, while electrons have much less mass.
To answer this question, you would need to know the masses of the different subatomic particles.
For the third question, metallic bonds form between: "cations and anions." Metallic bonds occur in metals where positively charged metal cations are surrounded by a "sea" of delocalized electrons. This arrangement creates a strong bond between the cations and the negatively charged electrons.
To answer this question, you need to understand the concept of metallic bonds and the types of particles involved in them.
Finally, for the fourth question, the option with the highest melting point is: "ionic compound." Ionic compounds typically have high melting points due to the strong electrostatic attraction between positive and negative ions. This attraction requires a significant amount of energy to break the bonds and melt the compound.
To answer this question, you should be familiar with the properties of different types of compounds and their bonding characteristics.