Name:_________________________________________________ Chemistry Department Midterm Review Unit 1 Matter & Measurement Vocabulary Practice: Chemical change Gas Physical change Coefficient Heterogeneous Pure substances Compound Homogeneous Qualitative Diatomic element Matter Quantitative Element Mixtures STP Endothermic Percent composition Subscript Exothermic Percent error MATTER__1. Anything that has mass and volume _% COMP__2. The composition of a compound of each element compared with the mass of the compound 3. Substance in the atoms exist in a fixed ratio COMPOUND A reaction in which the composition of a substance is changed CHEMICAL4. DIATOMIC 5. An element containing two identical atoms PHYSICAL_6. A change that does not alter the chemical properties of a substance PURE SUBSTANCE_7. Type of matter that includes compounds and elements only MIXTURE8. Type of matter that includes homogeneous or heterogeneous substances QUANTITATIVE_9. Description of numerical information QUALITATIVE10. Description of non-numerical information Actual error divided by the accepted value and multiplied by a factor of one hundred % ERROR_11. SUBSCRIPT12. The number that indicates the number of atoms present COEFFICIENT13. The number that indicates the number of units or molecules of that substance ENDOTHERMIC14. Process in which energy is absorbed EXOTHERMIC15. Process in energy is released HETEROGENEOUS16. Mixture in which the substances are not uniformly distributed HOMOGENEOUS_17. Mixture in which the substances are uniformly distributed 1°C, 273K, 1 atm, 101.3 kPa STP_18. ELEMENT__19. Form of matter which cannot be simplified or broken down any further by chemical means GAS_20. Phase of matter without definite shape or volume
Name:_________________________________________________ Chemistry Department Midterm Review Unit 1 Matter & Measurement Vocabulary Practice: Chemical change Coefficient Compound Diatomic element Element Endothermic Exothermic Gas Heterogeneous Homogeneous Matter Mixtures Percent composition Percent error Physical change Pure substances Qualitative Quantitative STP Subscript MATTER__1. Anything that has mass and volume _% COMP__2. The composition of a compound of each element compared with the mass of the compound COMPOUND 3. Substance in the atoms exist in a fixed ratio CHEMICAL4. A reaction in which the composition of a substance is changed DIATOMIC 5. An element containing two identical atoms PHYSICAL_6. A change that does not alter the chemical properties of a substance PURE SUBSTANCE_7. Type of matter that includes compounds and elements only MIXTURE8. Type of matter that includes homogeneous or heterogeneous substances QUANTITATIVE_9. Description of numerical information QUALITATIVE10. Description of non-numerical information % ERROR_11. Actual error divided by the accepted value and multiplied by a factor of one hundred SUBSCRIPT12. The number that indicates the number of atoms present COEFFICIENT13. The number that indicates the number of units or molecules of that substance ENDOTHERMIC14. Process in which energy is absorbed EXOTHERMIC15. Process in energy is released HETEROGENEOUS16. Mixture in which the substances are not uniformly distributed HOMOGENEOUS_17. Mixture in which the substances are uniformly distributed STP_18. 1°C, 273K, 1 atm, 101.3 kPa ELEMENT__19. Form of matter which cannot be simplified or broken down any further by chemical means GAS_20. Phase of matter without definite shape or volume