Construct as a star dies, it becomes denser
s temperature rises to a point where
helium (he) nuclei fuse with other nuclei
when this happens, the atomic numbers of
the other nuclei are increased by 2 because
each gains the two protons contained in
che he nucleus. for example, chromium
(c) fuses with he to become iron (fe)
copy and complete the concept map
showing the first four steps in he fusion

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

ugh fiel iente of insistí is did kiwis jaj