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- 1. Multiple-choice2 minutes1 pt
In which state(s) of matter are particles constantly moving?
gases only
liquids only
gases and liquids only
gases, liquids, and solids
- 2. Multiple-choice2 minutes1 pt
Which of these statements describes an example of a chemical property?
A silver statue begins to tarnish.
A painter coats a building with red paint.
A freshly waxed floor has a bright shine.
A metal turns to liquid at a certain temperature.
- 3. Multiple-choice2 minutes1 pt
Which process is an example of a physical change?
burning
rusting
flattening
decomposing
- 4. Multiple-choice2 minutes1 pt
Which types of changes observe the law of conservation of mass?
only changes of state
only physical changes
only chemical changes
physical changes and chemical changes
- 5. Multiple-choice2 minutes1 pt
Which of these choices is an example of a physical property?
the tarnishing of silverware
the texture of a piece of chocolate
the effect of acid rain on automobiles
the combustion of gasoline in a car engine
- 6. Multiple-choice2 minutes1 pt
Marisol finds the total mass of a sample of baking soda, a balloon, and a glass container with vinegar in it.
She adds the baking soda to the vinegar and immediately places the balloon over the mouth of the container. After the reaction is complete, she again finds the total mass of the system. Which statement is true about this investigation?
Mass is gained during the reaction because a chemical change is taking place.
The mass does not change because chemical changes observe the law of conservation of mass.
Mass is lost during the reaction because the gas is less dense than the baking soda or vinegar.
Mass is lost during the reaction because the gas can change in volume but baking soda and vinegar cannot.
- 7. Multiple-choice2 minutes1 pt
A child is upset because his ice cream is melting. He thinks he now has less dessert. Which of the following explanations correctly states why the child is incorrect?
He actually has more, not less, ice cream.
No mass is lost during a change of state.
The mass will increase if he freezes the melted ice cream.
Mass is lost only during certain changes of state, such as freezing.
- 8. Multiple-choice2 minutes1 pt
Rita wants to make some toast for breakfast, which she knows involves a chemical change to the bread. She puts a slice of bread in the toaster, but, after 10 minutes, she notices that the sides of the bread are black. What caused this chemical change to go too far?
the type of bread
the size of the bread
a decrease in temperature
an increase in temperature
- 9. Multiple-choice2 minutes1 pt
Which of the following is a way in which elements and compounds are different?
Elements are pure substances, but compounds are not.
Compounds can be broken down by physical changes, but elements cannot.
Elements are made of identical atoms, whereas compounds are made of identical groups of atoms.
A compound contains many different kinds of elements, whereas an element contains many different kinds of atoms.
- 10. Multiple-choice2 minutes1 pt
When paper is burned, the mass of the remaining ash is less than the mass of the original paper.
Which statement best explains this result?
The ash has less volume than the paper.
Some of the matter is destroyed during the reaction.
The mass of the ash cannot be accurately determined.
Some of the products of the reaction were given off as a gas.
- 11. Multiple-choice2 minutes1 pt
Which process is an example of a physical change?
Carrots are cut into small pieces and mixed into a salad.
A peanut butter sandwich is eaten and broken down by enzymes in the stomach.
Sodium metal and chlorine gas are combined to form sodium chloride, or table salt.
Sodium metal and water are combined to form a basic compound and a flammable gas.
- 12. Multiple-choice2 minutes1 pt
Magnetism, solubility, and malleability are physical properties of matter. What makes these properties different from chemical properties?
Physical properties relate to elements rather than compounds.
Physical properties appear only after a chemical change occurs.
Physical properties can be observed without attempting to change the identity of the substance.
Physical properties describe elements in the solid state rather than in the liquid or gas state.
- 13. Multiple-choice2 minutes1 pt
Alisa placed a small seashell on the pan of a balance. What other tool does she need to determine the density of the seashell?
scale
calculator
thermometer
graduated cylinder
- 14. Multiple-choice2 minutes1 pt
Which of the following is a way in which elements and compounds are similar?
Elements and compounds are both pure substances.
Elements and compounds are both listed on the periodic table.
Elements and compounds are both made up of different kinds of atoms.
Elements and compounds can both be broken down by physical changes.
- 15. Multiple-choice2 minutes1 pt
All matter has physical and chemical properties. These properties can be used to identify the type of matter. Which of these statements describes a chemical property?
A particular substance evaporates at 30 °C.
A 2-ft.-long metal bar has a mass of only 176 g.
A certain heavy metal turns to a liquid at room temperature.
A metal is added to a beaker of water, and the beaker explodes.
- 16. Multiple-choice2 minutes1 pt
Which change of state takes place when a gas loses energy?
melting
evaporation
solidification
condensation
- 17. Multiple-choice2 minutes1 pt
Which process represents a chemical change?
A lake freezes over into ice.
A metal bar is rolled into a flat sheet.
Vinegar bubbles when baking soda is added.
Sand, water, and salt combine to form a mixture.
- 18. Multiple-choice2 minutes1 pt
Which process can occur when the particles in a sample of matter experience an increase in kinetic energy?
freezing
deposition
condensation
evaporation
- 19. Multiple-choice2 minutes1 pt
Ana is creating a model to show atoms of solid bromine, liquid bromine, and gaseous bromine. How should her three models differ?
The size of the atoms should vary depending on the state.
The mass of the atoms should vary depending on the state.
The motion of the atoms should vary depending on the state.
The identity of the atoms should vary depending on the state.
- 20. Multiple-choice2 minutes1 pt
Matter is anything that has mass and takes up space.
True
False
- 21. Multiple-choice2 minutes1 pt
A solid has a definite volume and shape.
True
False
- 22. Multiple-choice2 minutes1 pt
An element is a substance that is made up of one type of atom.
True
False
- 23. Multiple-choice2 minutes1 pt
A beaker containing ice and water is placed on a warm hotplate. Will the ice in the beaker undergo a physical or chemical change?
a physical change because it will change state
a chemical change because it will change state
a physical change because it will form a new substance
a chemical change because it will form a new substance
- 24. Multiple-choice2 minutes1 pt
In the laboratory, Austin is given a mixture of iron filings, sand, and salt. To separate the mixture, Austin uses a magnet, boiling water, and a filter. Which statement is true about the process Austin uses to separate this mixture?
Austin uses only physical changes to separate the mixture's components.
Austin uses only chemical changes to separate the mixture's components.
Austin uses both physical and chemical changes to separate the mixture's components.
Austin uses neither physical nor chemical changes to separate the mixture's components.
- 25. Multiple-choice2 minutes1 pt
A physical property can be measured without changing the identity of the substance.
True
False
- 26. Multiple-choice2 minutes1 pt
One chemical property that can be measured in a substance is its reactivity with water. What is another chemical property?
density
combustibility
malleability
solubility
- 27. Multiple-choice2 minutes1 pt
A beaker containing ice and water is placed on a warm hotplate. Will the ice in the beaker undergo a physical or chemical change?
a physical change because it will change state
a chemical change because it will change state
a physical change because it will form a new substance
a chemical change because it will form a new substance
- 28. Multiple-choice2 minutes1 pt
What happens to the particles of a sample of matter as its temperature increases?
The particles melt.
The particles move faster.
The particles grow in size.
The particles become lighter.
- 29. Multiple-choice2 minutes1 pt
Which phrase describes the mass of an ice cube?
the total amount of water in the ice cube
an estimation of the weight of the ice cube
the amount of space that the ice cube occupies
the product found by multiplying its length, width, and height
