QUIZ 1: MATTER AND CHANGE
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
