Question
What do these two changes have in common? making jam melting wax Select all that apply. Both are only physical changes. Both are chemical changes. Both are caused by heating. Both are caused by cooling.
Solution
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(269 Votos)
Zuleika
Veterano · Tutor por 9 anos
Resposta
B. Both are chemical changes.C. Both are caused by heating.
Explicação
## Step 1The problem asks us to identify the commonalities between two processes: making jam and melting wax. ## Step 2Making jam involves the process of cooking fruit with sugar. This process involves a chemical change because the sugar molecules in the fruit undergo a chemical reaction to form new compounds. This is a chemical change because the sugar molecules are chemically altered to form new compounds.## Step 3Melting wax is a physical change. The wax changes from a solid state to a liquid state, but the molecular structure of the wax does not change. This is a physical change because the wax is simply changing its state, not its chemical composition.## Step 4Both processes involve heating. Making jam requires heating the fruit and sugar mixture to cook the fruit and dissolve the sugar. Melting wax requires heating the wax to change it from a solid to a liquid.## Step 5Based on the above analysis, the commonalities between making jam and melting wax are that both are caused by heating and both are chemical changes.