U1L6 DE HW Quiz Review

A diamond has a hardness of 10 on the Mohs scale, weighs 0.25 carats, and appears colorless and brilliant. The hardness of 10 is:

• An intensive property

• An extensive property

• Both intensive and extensive

• Neither intensive nor extensive

A steel rod has a length of 50.0 cm, a mass of 312 g, and a density of 7.85 g/cm³. The mass of 312 g is:

• An intensive property

• An extensive property

• Both intensive and extensive

• Neither intensive nor extensive

A sample of pure salt appears white in color, has a mass of 15.2 g, and melts at 801°C. The color (white) is:

• An intensive property

• An extensive property

• Both intensive and extensive

• Neither intensive nor extensive

A cube of ice melts at 0°C, has a volume of 8.0 cm³, and appears transparent. The volume of 8.0 cm³ is:

• An intensive property

• An extensive property

• Both intensive and extensive

• Neither intensive nor extensive

Zinc is a metal that melts at 420°C, has a density of 7.13 g/cm³ at 25°C, and reacts with dilute sulfuric acid to produce hydrogen gas. The melting point of 420°C is:

• A) A physical property

• B) A chemical property

• C) Both physical and chemical

• D) Neither physical nor chemical

Tags

NGSS.MS-PS1-4

Zinc reacts with dilute sulfuric acid to release hydrogen gas and also reacts slowly with oxygen gas at elevated temperatures to form zinc oxide, ZnO. The reaction with oxygen gas to form zinc oxide is:

• A) A physical property

• B) A chemical property

• C) Both physical and chemical

• D) Neither physical nor chemical

Zinc melts at 420°C, has a hardness of 2.5, and has a density of 7.13 g/cm³ at 25°C. It also reacts with oxygen gas to form zinc oxide. The density of 7.13 g/cm³ is:

• A) A physical property

• B) A chemical property

• C) Both physical and chemical

• D) Neither physical nor chemical

Zinc granules dissolve in dilute sulfuric acid with the release of hydrogen gas. The metal has a hardness of 2.5 and melts at 420°C. The dissolution in sulfuric acid is:

• A) A physical property

• B) A chemical property

• C) Both physical and chemical

• D) Neither physical nor chemical

Tags

NGSS.MS-PS1-2

Does the diagram show a physical change or chemical change?

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

Does the diagram show a physical change or chemical change?

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2