According to a survey conducted in 2007, there were an estimated 6.99 × 107 dogs, 3.61 × 107 cats, and 8.3 × 106 birds kept as pets in the United States. In this activity, you'll add these three numbers in both standard form and in scientific notation and check whether you get the same sum. Convert each of the three pet populations to standard form.

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

the answer would be c

the product of the pressure and volume is also constant