38 Questions
Which type of properties can be measured or observed without changing the identity of a substance?
Physical properties
What are the two kinds of properties in science?
Chemical and physical properties
When water is frozen or heated up, what changes?
Physical properties change
Which type of properties are independent of the quantity of matter?
Intensive properties
What is a property often used to describe in science?
All of the above
What are extensive properties dependent on?
Sample size or quantity of matter
What is the fundamental unit of matter according to Democritus?
Atom
Which subatomic particle has a charge of +1 and a mass of 1 atomic mass unit?
Proton
What is the most common element in the universe?
Hydrogen
Which model proposed that all matter was made of indivisible atoms?
John Dalton's atomic model
What type of change is observed when iron is exposed to both air and moisture?
Chemical change
What are atoms composed of?
Protons, neutrons, and electrons
What is a chemical property of iron?
Formation of rust when exposed to oxygen
Which phase change occurs when a liquid turns into a solid?
Freezing
What is the defining characteristic of a gas state of matter?
Fast-moving atoms with no defined volume or shape
What distinguishes a physical change from a chemical change?
Preserves the substance's chemical identity
What is the 'Triple Point' of states of matter?
The point at which water exists in all three states of matter at once
What is an example of a chemical change?
Rusting of metals
Which property is an example of an intensive physical property?
Color
What is the melting point of carbon in degrees Celsius?
3500.0
Which property is an example of an extensive physical property?
Weight
What is the density of water at 20 degrees Celsius in grams per cubic centimeter?
0.998
Which of the following is an example of a chemical property?
Odor
What is the unit commonly used to measure volume in liquids?
Liters (L)
Who discovered the first subatomic particle, the electron?
JJ Thomson
What did Ernest Rutherford discover during the gold foil experiment?
Protons
How did Niels Bohr elaborate on Rutherford's planetary model of the atom?
Stated that electrons orbited the nucleus in fixed energy levels
What did Erwin Schrodinger develop in the 1920s?
Cloud model of the atom
How are elements defined based on?
Number of protons in an atom's nucleus
What are elements made of?
Atoms
What makes each element different?
Number of protons, neutrons, and electrons
Which is the lightest and most abundant element in the universe?
Hydrogen
Which element has 2 protons, 2 electrons, and 2 neutrons?
Helium
What determines the physical and chemical properties of the atoms of each element?
Unique combination of subatomic particles
What is the definition of an isotope?
Atoms with different mass numbers
When were isotopes first characterized?
1913
What was the term 'isotope' coined in reference to?
'Same place' occupied in the Periodic Table
'Isotope' refers to different species of atoms of the same chemical element that differ in their _____.
'Atomic masses'
Test your knowledge on chemical changes in matter with this quiz. Learn about the differences between chemical and physical changes, and understand how the composition of substances can be altered through various reactions.
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