QUIZ 1: MATTER AND CHANGE

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What type of change is baking a cake? chemical physical

chemical

What type of change is making water from H 2 and O 2 ? chemical physical

chemical

What type of change is striking a match? chemical physical

chemical

A chemical reaction that takes in heat is called: exothermic endothermic a phase change

endothermic

During fission, a small amount of mass is changed to

energy

A chemical change occurs when a substance changes phase. True False

false

The process of a neutron splitting a nucleus into two parts is called _____. fusion fission atomic

fission

How much heat (in calories) must be applied to a 100 mL beaker filled with boiling water in order to vaporize the water? 540 5.4 x 10 4 800 8,000

not 540

Most of the energy released by nuclear fission is in the form of _____________ rays.

not omega

A change involving whole atoms is called _____. chemical physical nuclear

not physical

A change in the size or shape of a substance is a _____________ change.

physical

What type of change is melting ice? chemical physical

physical

An alpha particle is made up of _____ and _____. protons neutrons electrons ions

protons neutrons

Particles or energy given off in a nuclear reaction are called

radiation

The Law of Conservation of Matter describes how mass is not lost during a chemical reaction. True False

true

The Law of Conservation of Matter is a basic principle in studying chemical reactions. True False

true

The change of phase from vapor to a liquid is called _________.

Condensation

Density (D) is defined by mass/volume. Which item decreases as heat is applied? D m V

D

What is true about a chemical equation? You can count the number of molecules. You can count the number of atoms. You can see how the products combine to form reactants.

You can count the number of molecules. You can count the number of atoms.

When one nucleus after another is split _____. a double nucleus is formed. a neutron split occurs. a chain reaction begins.

a chain reaction begins.

The beta rays emitted from atomic nuclei are _____. an electron a neutron a proton

an electron


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