Unit 2, Lessons 1-6_Quiz

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QUESTION: 1 Review the image, what are some physical properties of both salt and sugar?

• A. Soft texture, yellow in color, and rusts quickly.
• B. White in color, hard in texture, and are solids.
• C. White in color, no smell, and are both toxic to taste.
• D. Octagon in size, white in color, strong smell that is toxic.

QUESTION: 2 Magnetism, solubility, shininess are examples of - - -?- - - - that help describe objects without changing their chemical composition.

• A. Materials.
• B. Weights.
• C. Physical properties.
• D. Solids.

QUESTION: 3 .To make sugar water for your hummingbird feeder, you dissolve 50 grams of sugar solute in 250 grams of water solvent. How much does the sugar water weigh?

• A. 200 grams.
• B. 300 grams.
• C. 250 grams.
• D. 50 grams.

QUESTION: 4 Alba performed an experiment and modeled it below. Was a new substance formed during this experiment? What kind of change occurred? Explain the model in detail below.

• Yes

  Chemical Change

  Sugar + Water = Sugar Water Solution

• Yes

  Physical Change

  Sugar + Water = Sugar Water Solution

• No

  Physical Change

  Sugar + Water = Sugar Water Solution

QUESTION: 5 Lian performed an experiment and decided to make a model. Below is a model of his experiment. His experiment is an example of --------?------- in which a ------------- was changed into a -------------- .

• A. physical or phase change - solid - liquid
• B. freezing point - liquid - solid
• C. color change - solid - quartz
• D. chemical change - liquid - syrup

QUESTION: 6 Which of Ms. Smalls’ observations would show that a burning candle has physical changes and no new substance is formed?

• A. Time passes one minute at a time.
• B. Black smoke is given off; hot gases are rising.
• C. The wax starts to melt.
• D. The flame glows red and orange.

QUESTION: 7 A glass of ice water is placed on a table inside a room that is at room temperature. The ice inside the glass melts. Which piece of evidence supports the conservation of matter during the changes shown in the diagram?

• A. The mass of the glass is the same before and after the ice melts.
• B. The combined mass of the glass and its contents is less after the ice melts.
• C. The contents of the glass are wet before and after the ice melts.
• D. The contents of the glass are colorless before and after the ice melts.

Question 8: Which of the following is always true of matter?

• It has weight or mass
• It is not made up of particles
• It is only a solid or a liquid
• They are shiny