Exam 1 Review

What is an ATOM?

• The smallest unit of matter that retains the properties of an element.

• ) A type of molecule

• A form of energy.

• A subatomic particle

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What are the three subatomic particles that make up an atom?

• Electrons, positrons, and neutrons.

• Protons, neutrons, and electrons

• Protons, electrons, and photons.

• Neutrons, electrons, and photons.

What is the law of conservation of matter?

• Matter cannot be created or destroyed in a chemical reaction.

• Energy cannot be created or destroyed in a chemical reaction

• Atoms cannot be created or destroyed in a chemical reaction.

• The mass of an object remains constant regardless of its location.

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What is the difference between potential energy and kinetic energy?

• Potential energy is the energy of motion, while kinetic energy is stored energy.

• Potential energy is stored energy, while kinetic energy is the energy of motion

• Potential energy and kinetic energy are the same thing

What is the law of conservation of energy?

• Energy is always conserved in chemical reactions, but not in physical reactions

• Energy can only be transferred, not transformed.

• Energy can be created or destroyed in any process.

• Energy cannot be created or destroyed, only transferred or transformed.

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What is the difference between an exothermic and endothermic reaction?

• ) An exothermic reaction absorbs energy from the surroundings, while an endothermic reaction releases energy to the surroundings.

• An exothermic reaction releases energy to the surroundings, while an endothermic reaction absorbs energy from the surroundings.

• An exothermic reaction involves the formation of a compound, while an endothermic reaction involves the breaking of a compound.

• An exothermic reaction occurs at high temperatures, while an endothermic reaction occurs at low temperatures.

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what is this?

• Ionic bond

• Covalent bond

• James bond

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the subatomic particle(s) that takes up the MOST ROOM here are....

• the protons

• the neutrons

• the electrons

• the jimmy neutrons

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A baker wants to make larger cookies. She experiments with her recipe by changing the temperature of the butter. What was the independent variable?

• oof. wasn't in class that day, never went back to watch the recordings or accessed the PPT lessons.

• temperature of the butter

• size of the cookie

• the chocolate chips

POTENTIAL energy is.....

• stored energy

• the energy of motion

• the energy of rest

• um

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