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Introducing new Paper mode
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- Multiple ChoicePlease save your changes before editing any questions.Paper burning is a __________________ change.physicalchemical
- Multiple ChoicePlease save your changes before editing any questions.Dry ice (solid carbon dioxide) turning into carbon dioxide gas is aphysical changechemical change
- Multiple ChoicePlease save your changes before editing any questions.Which of these phrases describes the results of a chemical change?charred wood, ash, and smokesalt dissolving in watergold nuggets meltinga dented car door
- Multiple ChoicePlease save your changes before editing any questions.An iron nail rusting is a _______________ change. The ________________ property of reactivity explains the iron’s ability to form a new substance.physical, physicalphysical, chemicalchemical, chemicalchemical, physical
- Multiple ChoicePlease save your changes before editing any questions.Dissolving Kool-Aid into water is an example of aphysical changechemical change
- Multiple ChoicePlease save your changes before editing any questions.
Which example below is a chemical reaction?
ice melting
water boiling
lighting a match
grape juice freezing
- Multiple ChoicePlease save your changes before editing any questions.The following changes (melting wax, evaporating gasoline, freezing water) are all examples ofnuclear changes.chemical changes.physical changes.a. energy consumption.
- Multiple ChoicePlease save your changes before editing any questions.Which of these BEST describes a physical change?fireworks explodea log in the campfire turns into ashesrust forms on your bicyclethe amount of water in a pan decreases
- Multiple ChoicePlease save your changes before editing any questions.The density of a piece of gold jewelry is often used to determine its purity. Density is what kind of property?chemicalcolligativeextrinsicphysical
- Multiple ChoicePlease save your changes before editing any questions.During Mr. Nye's science class, students were expected to identify various substances using physical properties they could easily measure. Mr. Nye gave each of the five groups a green, metal cube and asked them to identify what the cube was made of. Matt's cube, after 5 trials, had an average density of 7.40 g/cm3 . His group's cube was made ofaluminumgoldnickelzinc
- Multiple ChoicePlease save your changes before editing any questions.This table displaysprice values of the metals.chemical properties of the metals.physical properties of the metals.corrosive resistance of the metals.
- Multiple ChoicePlease save your changes before editing any questions.Consider the picture of the jar holding oil, syrup, and water. It would be easy to pour off the oil to separate from both the syrup and water because the liquids have differentdensitiesmassestemperaturesvolumes
- Multiple ChoicePlease save your changes before editing any questions.Color, shape, texture, and size are _____________ properties of matter.chemicalliquidphysicalsolid
- Multiple ChoicePlease save your changes before editing any questions.A student takes four samples of a white crystalline solid and places each in a well plate. On top of each sample, she carefully places 20 drops of mystery liquids A, B, C and D. Her results for each well are:
The solid dissolves quickly in liquid A.
The solid remains unchanged with the addition of liquid B.
The white solid remains, but dissolves very slowly in liquid C.
When liquid D is added, fizzing occurs and the well becomes warmer.
In which well does a chemical change occur?abcd - Multiple ChoicePlease save your changes before editing any questions.Water freezes and melts at 0°C. Melting point is what kind of property?chemicalcolligativeextensivephysical
- Multiple ChoicePlease save your changes before editing any questions.Which of the following would be evidence that a chemical change has occurred?change in sizechange in statenew substance formedchange in shape