Which of the following is/are example(s) of a physical change? * sugar is dissolved in water
water freezes
tea is brewed
dry ice sublimes
All of these are examples of physical change.

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

What three things determine the shape and size of a puddle when water is poured out onto a surface

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