assigment1week2.docx - Classwork Chapter 3 Matter and Energy Student’s Name Danielly Valdes Perez 1 Complete the blanks in the following picture

assigment1week2.docx - Classwork Chapter 3 Matter and...

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Classwork Chapter 3 Matter and Energy Student’s Name: 1. Complete the blanks in the following picture. 2. Classify each of the following as a pure substance or a mixture: Pure substance or mixture a. baking soda (NaHCO 3 ) Pure b. a blueberry muffin Mixture c. ice (H 2 O) Pure d. zinc (Zn) Pure e. Trimix (oxygen, nitrogen, and helium) in a scuba tank Mixture f. a soft drink Mixture g. propane (C 3 H 8 ) Pure h. a cheese sandwich Mixture Danielly Valdes Perez Element Homogeneous Heterogeneous Compound Mixture Pure substances
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i. an iron (Fe) nail Pure j. salt substitute (KCl) Pure 3. Classify each of the following pure substances as an element or a compound: a. a silicon (Si) chip. Element b. hydrogen peroxide (H 2 O 2 ). Compound c. oxygen (O 2 ). Element d. rust (Fe 2 O 3 ). Compound e. methane (CH 4 ) in natural gas. Compound f. helium gas (He) Element g. mercury (Hg) in a thermometer Element h. sugar (C 12 H 22 O 11 ) Compound i. sulfur (S 8 ) Element 4. Classify each of the following mixtures as homogeneous or heterogeneous : a. vegetable soup heterogeneous b. seawater
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  • Fall '17
  • FERNANDEZ
  • Chemical substance, Chemical compound

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