Properties Of Matter Question Preview (ID: 29799)


Compounds And Molecules, States Of Matter, Density. TEACHERS: click here for quick copy question ID numbers.

Which of the following could be used to identify a substance?
a) melting point
b) temperature
c) mass
d) volume

A substance with a mass of 26 g has a volume of 42 mL. What is its density?
a) 0.62 g/mL
b) 1.62 g/mL
c) 16 g/mL
d) 68 g/mL

Compare the motion of atoms in a solid to a gas of the same substance.
a) gas atoms move very fast and are very far apart
b) solid atoms move very fast and are very far apart
c) gas atoms move slowly but are still very far apart
d) solid atoms move fast and are very close together

Breaking a piece of wood in half changes the density in what way?
a) no change
b) increased density
c) decreased density
d) this is the wrong answer, don't pick it! :)

Billy spilled water on the floor and was a jerk and didn't clean it up. Molly comes by later and the floor is dry. What happened to the water?
a) The water changed into a gas
b) The water absorbed into the floor
c) The custodian must have seen it and mopped it up
d) There is no water, we are in the matrix

DNA is a molecule made of H, C, O, N, and P bonded together. This makes it...
a) a compound
b) an element
c) a mixture
d) delicious

When water boils, bubbles form under the surface of the water and rise to the surface. What is in the bubbles?
a) water
b) air
c) oxygen
d) nothing

A million carbon atoms bonded together would be considered...
a) an element and molecule
b) an element and a compound
c) a compound only
d) a compound and molecule

Which of the following is correct?
a) protons are positive and are in the nucleus
b) neutrons are negative and are in the outer shell
c) electrons are negative and are in the nucleus
d) protons are positive and are in the outer shell

The temperature at which a substance is changing from a liquid to a solid (thermal energy is taken away).
a) freezing point
b) melting point
c) boiling point
d) condensing point

The temperature at which a substance is changing from a solid to a liquid (thermal energy is added).
a) melting point
b) freezing point
c) boiling point
d) condensing point

Solid water floats on liquid water. What does this mean for the density?
a) Solid water has a lower density than liquid water
b) Solid water has a higher density than liquid water
c) Solid water has less mass
d) Solid water has less volume

What is the MAIN reason there are gaps in bridges?
a) so the sections can expand and shrink when the temperature changes
b) so they can move when cars drive on them
c) so water can drain away when it rains
d) so the sections can move in case of an earthquake

When most substances are heated, what happens to density?
a) density decreases because the particles are more spaced apart
b) density decreases because the particles are closer together
c) density increases because the particles are more spaced apart
d) density increases because the particles are closer together

Ratio of mass to volume of a substance.
a) density
b) temperature
c) energy
d) atom

NaCl is...
a) a compound
b) a mixture
c) a molecule
d) an element

How is density calculated?
a) mass divided by volume
b) volume divided by mass
c) mass multiplied by volume
d) volume added to mass

Two or more elements chemically combined
a) compound
b) molecule
c) element
d) mixture

Substance of only one type of atom
a) element
b) molecule
c) compound
d) mixture

Two or more atoms bonded together. Atoms could be the same type or different types.
a) molecule
b) compound
c) element
d) mixture

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