6
Describing Elements
Warm-Up
Which statements accurately describe elements? Check all that apply
Elements are made up of two or more types of atoms,
Elements are made up of only one type of atom
Each element has a unique chemical symbol
Elements can be identified by their atomic number
One element cannot be combined with another element.

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

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?