CHM 151 - CHAPTER 1 EXAM QUESTIONS WITH VERIFIED SOLUTIONS LATEST UPDATE 2026
______ is composed of particles. - Answers Matter
How the particles come together dictates the ________ _________ of matter - Answers Physical
Proterties
______ is defined as anything that has mass and occupies space. - Answers Matter
_________ is he discipline that seeks to understand matter and its properties. - Answers Chemistry
______ discovered atoms. - Answers Dalton
Dalton is the father of the __________ ______. - Answers Scientific Method
An _______ is made of the same kind of atom. - Answers Element
A ________ is a group of chemically charged combined atoms. - Answers Molecule
A ________ is a molecule made of two or more different kinds of elements. - Answers Compound
An __________ is an observation carries out in a controlled environment so results can be duplicated
and explained. - Answers Experiment
A __________ is a tentative explanation for what occurs in nature - Answers Hypothesis
A ______ is a tested explanation for nature - Answers Theory
________ can be validated by experimental results, used to predict future observations, and can be
tested by experiments. - Answers Theories
A ___ describes a fundamental relationship or regularity in nature - Answers Law
Explain the Scientific Method
1) Make an ___________
2) ______ a problem
3) Propose a __________
4) Gather ________ to test your __________
5) ______ or ______
6) Develop ______ - Answers Hypothesis, Define, Hypothesis, Evidence, Hypothesis, Reject or Retain,
Theory
This law states that "a pure compound always contains definite proportions of elements". - Answers
Law of Definite Proportions
The _______-_______ _____ is the closest looking to actual atoms. - Answers Space-filling model
Water always flows toward the ______ energy. - Answers Lowest
While water may have different phases, it always has the same _________ _________. - Answers
Molecular structure
______ have:
-Definite shape
- Definite volume
- Close particles
- Vibrate in place - Answers Solids
________ have:
- Indefinite shape
- Definite volume
- Flow o assume shape of container - Answers Liquids
_____ have:
-Indefinite shape
-Indefinite volume
- The same shape and volume as their container
- Particles that are far apart
- High energy particles - Answers Gases
The ________ __________ of ______ can be observed by seeing or toughing an item. - Answers
Physical Properties of Matter
________ __________ describe chemical reactions. - Answers Chemical Properties
A ____ _________ means all material has the same structure and cannot be separated. - Answers
Pure substance
A _______ is a material that can be separated by physical properties. - Answers Mixture
ALL matter is either ____ or a _______. - Answers Pure or a mixture
______ is composed of particles. - Answers Matter
How the particles come together dictates the ________ _________ of matter - Answers Physical
Proterties
______ is defined as anything that has mass and occupies space. - Answers Matter
_________ is he discipline that seeks to understand matter and its properties. - Answers Chemistry
______ discovered atoms. - Answers Dalton
Dalton is the father of the __________ ______. - Answers Scientific Method
An _______ is made of the same kind of atom. - Answers Element
A ________ is a group of chemically charged combined atoms. - Answers Molecule
A ________ is a molecule made of two or more different kinds of elements. - Answers Compound
An __________ is an observation carries out in a controlled environment so results can be duplicated
and explained. - Answers Experiment
A __________ is a tentative explanation for what occurs in nature - Answers Hypothesis
A ______ is a tested explanation for nature - Answers Theory
________ can be validated by experimental results, used to predict future observations, and can be
tested by experiments. - Answers Theories
A ___ describes a fundamental relationship or regularity in nature - Answers Law
Explain the Scientific Method
1) Make an ___________
2) ______ a problem
3) Propose a __________
4) Gather ________ to test your __________
5) ______ or ______
6) Develop ______ - Answers Hypothesis, Define, Hypothesis, Evidence, Hypothesis, Reject or Retain,
Theory
This law states that "a pure compound always contains definite proportions of elements". - Answers
Law of Definite Proportions
The _______-_______ _____ is the closest looking to actual atoms. - Answers Space-filling model
Water always flows toward the ______ energy. - Answers Lowest
While water may have different phases, it always has the same _________ _________. - Answers
Molecular structure
______ have:
-Definite shape
- Definite volume
- Close particles
- Vibrate in place - Answers Solids
________ have:
- Indefinite shape
- Definite volume
- Flow o assume shape of container - Answers Liquids
_____ have:
-Indefinite shape
-Indefinite volume
- The same shape and volume as their container
- Particles that are far apart
- High energy particles - Answers Gases
The ________ __________ of ______ can be observed by seeing or toughing an item. - Answers
Physical Properties of Matter
________ __________ describe chemical reactions. - Answers Chemical Properties
A ____ _________ means all material has the same structure and cannot be separated. - Answers
Pure substance
A _______ is a material that can be separated by physical properties. - Answers Mixture
ALL matter is either ____ or a _______. - Answers Pure or a mixture
