5. The number of bonds an atom can form is represented in an electron dot diagram by
A. pairs of dots
B. unpaired dots
C. total number of dots
6. Which part of an atom participates in chemical bonding?
A. proton
B. neutron
C. electron
7. An electron dot diagram shows
A. the number of valence electronst.
B. the strength of electron energy fields.
C. the spacing arrangement of electrons.
8. Except for helium atoms, atoms tend to gain, lose, or share valence electrons
until they have valence electrons.
A. no
B. four
C. eight

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet