Matter Review Christensen Class Question Preview (ID: 34540)


1st Semester Review. TEACHERS: click here for quick copy question ID numbers.

What do scientists call the smallest unit of matter that has its own recognizable identity?
a) Atom
b) Compound
c) Electron
d) Molecule

How do scientists know matter is made of particles?
a) They can see them.
b) Experiments have proven it.
c) People have always known it
d) A famous scientist decided it was true

What do scientists call a substance that is made of two or more atoms bonded together?
a) Atom
b) Electron
c) Molecule
d) Proton

Which of the following is the best model of molecules in a gas?
a) Marbles glued together in a ball
b) Marbles in a box
c) Marbles being shaken in a box
d) Marbles frozen in a box

If a model were made of an atom with the nucleus the size of a pea, how large would the rest of the atom be?
a) the size of a basketball
b) the size of a house
c) the size of a football stadium
d) the size of a planet

Early chemists thought the parts of the atom were spread evenly throughout the atom. How has the model changed? We now know
a) that it is shaped like a cube
b) it has most of it’s mass in the center
c) most of the atoms’ particles are in the outer layer
d) atoms are holding still

Ancient people thought matter was made of Earth, wind and fire. What do we now know matter is made of?
a) electricity
b) nothing
c) air
d) atoms

Which would you use to determine the mass of an object?
a) Meter stick
b) Graduated cylinder
c) Bathroom scale
d) Triple beam balance

Which would you use to find the volume of a rectangular cube?
a) Meter stick
b) Graduated cylinder
c) Bathroom scale
d) Triple beam balance

Why does ice float on water?
a) it is colder than water
b) it is less dense than water
c) it is harder than water
d) it is lighter than water

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