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Vocabulary
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100
What is an atom?
A small particle that is a building block of matter
100
What particles make up atoms?
Protons, Neutrons, and Electrons
100
What determines the physical properties of matter?
The arrangement of atoms
100
What is condensation?
Condensation occurs when a gas changes into a liquid?
100
Chemical equations are used to describe? A) changes in state B) chemical changes C) chemical properties
chemical changes
200
What is the difference between a hetergeneous mixture and a homogeneous mixture?
A heterogeneous is a type of mixture in which the individual substances are not evenly mixed. A homogeneous is a type of mixture in which the individual substances are evenly mixed.
200
How are elements related to compounds?
Each compound is made of atoms of two or more different elements chemically bonded together.
200
What are the three states of matter?
Solid, Liquid, Gas
200
What is deposition?
Deposition occurs when a gas changes into a solid without first becoming a liquid.
200
Magnetism is a physical property that could be used to separate a mixture of A) sugar and salt B) Salt and water C) iron filing and sand
iron filing and sand
300
What is the difference between a physical property and a chemical property?
A physical property is a characteristic of matter that you can observe or measure without changing the identity of the matter. A chemical property is a characteristic of matter that can be observed as it changes to a different type of matter.
300
Describe the electrical charges of the particles in atoms?
Protons have a positive charge. Neutrons have no change. Electrons have a negative charge.
300
What determines the state of matter?
How close the particles are to one another in the matter and how fast they move.
300
What is sublimation?
Sublimation occurs when a solid changes directly into a gas without first becoming a liquid.
300
Color change, odor change, and bubbles are signs that a ..... might have occurred. A) energy change B) physical change C) chemical change
B) physical change
400
Why is a physical change different than a chemical change?
The matter from a physical change stays the same and the matter from a chemical change tends to change into other substances with new physical and chemical properties.
400
Compare a solvent and a solute?
A solvent is the substance that is present in the largest amount in a solution. All other substances in a solution are called solutes.
400
What determines if a property is size-dependent?
A property is size-dependent if its value depends on the size of a sample?
400
What is the boiling point of matter?
The temperature at which a liquid changes into a solid.
400
What activity could be a sign that a chemical change has occurred? A) a solid melts B) a substance dissolves C) a liquid changes color D) an object change shape
C) a liquid changes color
500
What are the two characteristics of matter?
Substances and mixtures
500
What can you learn about a compound from its chemical formula?
You can determine the different atoms that make up compound. You also can determine how the atoms combine.
500
What change of state occurs when a substance reaches its melting point? What occurs when it reaches its boiling point?
A substance changes from a solid to a liquid when it reaches its melting point. It changes from a liquid to a gas when it reaches its boiling point.
500
Describe the movement of particles when thermal energy is added to a solid?
The particles speed up and move farther apart.
500
Which item is not shown in a balanced chemical equation. A) the products of the reaction B) the reate at which the reaction occurs C) the reactants present before the reaction D) the conversation of mass during the reaction
B) The rate at which the reaction occurs