Logs of pine wood are burning in a fireplace. What are two signs that a chemical change is happening to the wood?The wood is brownThe wood smells like pineThe wood turns blackHeat and light are releasedI'm not sure
Question
Logs of pine wood are burning in a fireplace. What are two signs that a chemical change is happening to the wood?The wood is brownThe wood smells like pineThe wood turns blackHeat and light are releasedI'm not sure
Solution
Two signs that a chemical change is happening to the wood are:
-
The wood turns black: This is a sign of a chemical change because the wood is being transformed into a new substance, ash, which has different properties than the original wood.
-
Heat and light are released: This is another sign of a chemical change. The release of heat and light is a result of the chemical reactions happening as the wood burns. This is known as an exothermic reaction.
Similar Questions
Which is not a clue that could indicate a chemical change? A Change in colorB Change in shape CChange in energy DChange in odor
Which of the following is a chemical change?*1 pointA) Ice melting into waterB) Sugar dissolving in waterC) Wood burningD) Cutting a piece of paper
Which of the following is NOT true about wood burning for heating and cooking?a.Wood burning can emit large amounts of harmful gasesb.Wood burning produces solid particulate matter.c.Wood is non-polluting and green method of heatingd.Wood burning can cause asthma, cancer, and other diseases
Indicate if the following are physical change or chemical changephysical changechemical change Changing the size and shapes of pieces of wood wEvaporationBurning woodAcid rain damaging a marble statue
For each item, choose whether the change is a physical change or a chemical change.exploding firecracker: mowing grass: breaking a window: spreading butter on toast: burning wood in a fireplace: acid rain corroding gravestones: NEXT QUESTION
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.