Chemical Vs Physical Changes: Question Preview (ID: 30910)


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Which of the following is a physical change?
a) Frying Eggs b) Baking a Cake c) MIxing Cookie Dough d) burning wood
Which of the following is NOT a physical change?
a) dying your hair b) adding food coloring to water c) breaking an egg d) nailing together boards of wood
In a chemical equations, the compounds or elements on the left side of the arrow are called the _________________________.
a) Products b) Reactants c) Result d) Sum
What kind of chemical change might be observed in cars driven in coastal areas or in areas that use salt to treat icy roads?
a) precipitation b) formation of salt crystals c) dents and dings d) corrosion
Which of the following is an example of a chemical change?
a) ice melting in a glass b) wood burning in a fireplace c) defrosting food in a microwave oven d) the addition of food coloring to a glass of water
baking soda + vinegar → gas + white solid Which of the following is a reactant in the equation?
a) Gas b) white solid c) baking soda d) none of the above
Which of the following is NOT a chemical change?
a) juice the ferments b) salt being mixed with water c) silver tarnishing in open air d) antacid that neutralizes stomach acid
Scientists study the characteristics of substances to better understand the natural world. Which of the following is not a chemical or physical characteristic of a substance?
a) odor b) density c) cost d) color
Which of the following is evidence of a chemical change?
a) Color change b) Bubbles c) Heat forming d) all of the above
You step on a soda can and crush it. Why is this a physical change?
a) the molecules in the can are still the same b) no chemical bonds were created or destroyed c) you only changed the shape of the can d) all of the above
You blow dry your wet hair. What type of change?
a) Physical change b) Chemical change c) * d) *
You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it. (Rust)
a) Physical change b) Chemical Change c) * d) *
True or False. When ice cream melts, a chemical change occurs.
a) True b) False c) * d) *
Liquid water particles boiling and turning into a gas (water vapor). Physical or Chemical?
a) Physical b) Chemical c) None of the above d) *
_______________ changes happen when atomic bonds are broken or created during chemical reactions.
a) Chemical b) Physical c) No d) None of the above
In a fireworks show, the fireworks explode giving off heat and light. What type of change?
a) Physical Change b) Chemical Change c) None of the above d) *
True or False. Changing the size and shapes of pieces of wood would be a chemical change.
a) True b) False c) * d) *
Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.
a) physical, chemical b) chemical, physical c) none of the above d) *
Dissolving salt in water is a ______________
a) Physical Change b) Chemical Change c) d) None of the above
A straight piece of wire is coiled to form a spring. What type of change?
a) Physical Change b) Chemical Change c) None of the above d) *
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