14. From left to right across a period, what change is occurring within the atomic nuclei? a.
b.
c.
d
A proton is gained.
An electron is gained.
A neutron is lost.
The electron cloud size is decreasing.

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn