Name: __________________ Chemical and Physical Changes Questions Multiple Choice Write the letter of the answer that best completes each statement. 1- A viscous substance is in the phase called a. Solid b. Liquid c. Gas d. Plasma 2- The substance that has the most energy is a. Ice water b. Ice c. Tap water d. Steam 3- An example of a chemical property is a. Color b. The ability to rust c. Density d. Mass 4- The change of a substance from a gas to a liquid is called a. Vaporization b. Sublimation c. Condensation d. Evaporation 5- The change of a liquid to a solid is called a. Freezing b. Melting c. Sublimation d. Vaporization 6- When particles in a closed container are heated, they a. Lose energy b. Lose volume c. Move closer together d. Move faster Miller 7- When substances go directly from the solid phase to the gas phase, the phase change is called a. Sublimation b. Condensation c. Evaporation d. Vaporization 8- The characteristic of matter that is not a physical property is a. Hardness b. Flammability c. Texture d. Shape 9- Solids that lose their shape under certain conditions are a. Rigidly arranged b. Crystalline c. In a regular repeating pattern d. Amorphous 10- The tiny particle that makes up a solid a. Can move more easily than the particles in other phases b. Can flow around each other c. Are spread far apart d. Are packed very close together 11- Particles of a liquid are a. Extremely far apart b. Not free to move c. Fairly close together d. Able to expand without limit 12- An example of a substance that sublimes is a. Ice cream b. Regular ice c. Dry ice d. Ice water 13- A new substance is formed as a result of a. Physical change b. Chemical change c. Physical property d. Chemical property 14- An example of a physical change is the a. Change in the color of leaves in the autumn b. Rust on a garden tool c. Process called photosynthesis d. Shredding of a piece of paper 21- Dry ice is solid a. Water b. Oxygen c. Carbon monoxide d. Carbon dioxide 15- An example of a chemical reaction is the a. Explosion of fireworks b. Shattering of a glass c. Freezing of ice d. Drying of wet laundry 22- A chemical change is sometimes called a a. Phase change b. Chemical reaction c. Physical change d. Physical property 16- Which of the following is an example of a physical property a. Color b. Shape c. Texture d. All of these 23- Mowing the lawn is an example of a a. Phase change b. Physical change c. Chemical change d. Density change 17- The properties that describe how a substance changes into other substances are called a. Chemical properties b. Physical properties c. General properties d. Phase properties 18- An example of an amorphous solid is a. Glass b. Table salt c. A snowflake d. Solid carbon dioxide 19- A regular repeating arrangement of particles is called a a. Plasma b. Crystal c. Phase d. Sublimation 20- A very high energy phase of matter not found naturally on earth is a. Crystalline solid b. Amorphous solid c. Flammable gas d. Plasma Miller 24- Burning a piece of paper is an example of a a. Phase change b. Physical change c. Chemical change d. Mass change 25- An example of a crystalline solid is a. Candle wax b. Glass c. Table salt d. Tar 26- Which of the following has a definite volume, but not a definite shape a. Solid b. Liquid c. Gas d. Plasma 27- When gas leaves the surface of a liquid, the liquid a. Evaporates b. Boils c. Melts d. Condenses True or False Mark each of the sentences as true or false. 28- ____Solids have no definite shape and no definite volume. 29- ____Perspiration cools the body by means of sublimation. 30- ____The change of a liquid to a gas is called vaporization. 31- ____Matter can exist in only three phases—solid, liquid and gas. 32- ____An amorphous solid can be thought of as a slow-moving liquid. 33- ____The sun contains matter made of plasma. 34- ____The change of a substance from a solid to a liquid is called freezing. 35- ____When bubbles of gas form inside a liquid, the liquid boil. Fill in the Blank Fill the correct word into the blank. 36- The resistance of a liquid to flow is an indication of its ___________________. 37- The formation of drops of water on the outside of a glass containing a cold drink is an example of the phase change called_________________. 38- Vaporization at the surface of a liquid is called ____________________. 39- Properties that describe how substances change into new and different substances are called ______________ properties. 40- Properties that can be observed without changing the identity of a substance are called ________________ properties. 41- Matter can exist in four phases—solid, liquid, gas and _______________. 42- Substances with a definite shape and a definite volume are called ____________________. 43- Substances can be made to change _____________ by adding or taking away energy. 44- The ______________ is the temperature at which a solid changes to a liquid. Miller 45- The phase change that occurs when a solid changes directly into a gas is called __________________. 46- Another name for a chemical change is a(an) ______________________. 47- Solids that lose their shape under certain conditions are called _________________ solids. 48- The particles of a (an) _________ are spread far apart from one another. 49- Substances with a definite volume but no definite shape are called ________________. 50- A snowflake is an example of a (an) _____________________ solid. Use the pictures to answer the following questions. A B C 51- The above pictures show the particle arrangement of three substances. Which of the three substances has particles with the greatest amount of energy? 52- Which substance has particles which are least able to move? 53- Which of the three substances would be classified as a liquid? 54- Which of the substances would have neither a definite volume nor a definite shape? 55- Which of the substances would have the greatest density? (Hint: remember that density is defined as the mass of a substance per unit of volume. 56- The candle is 2 cm high, has a waxy white color, and has no odor. Do these observations refer to a physical property, a physical change, a chemical property or a chemical change? 57- When the candle was lighted, a pool of liquid wax formed in a bowl around the wick. Does this observation refer to a physical property, a physical change, a chemical property or a chemical change? Miller 58- The lighted wick of the candle glowed red and some of the tip of the wick turned black. Does this observation refer to a physical property, a physical change, a chemical property or a chemical change?