Physical Science Q1 2012 21 - 30: Question Preview (ID: 10477)

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WHich of these is NOT an example of a physical change?
a) liquid evaporating
b) ice melting
c) a match burning
d) a piece of wood breaking

Pretend that an object has a density of 5 grams per centimeter cubed. If you were to cut the object in half, the density of each half is
a) less than 5 grams per centimeter cubed
b) more than 5 centimeters cubed
c) the exact same
d) for some odd reason, 0.

Which of the following is NOT a chemical property?
a) acidity
b) density
c) reactivity
d) combustibility

What is the formula to find density?
a) density = weight divided by volume
b) mass = weight x volume
c) density = mass divided by volume
d) density = volume divided mass

John Dalton's model of an atom can be described as:
a) electrons follow a set path around the nucleus
b) electrons are inside the atom, but outside of the nucleus
c) the atom looks like a cloud, you can't really see anything else
d) electrons and protons float freely within the boundaries of the atom

Which model of the atom does the BEST job of illustrating the three dimensional structure of the atom?
a) Bohr's model
b) Thompson's model
c) Rutherford's model
d) Electron cloud model

Which subatomic particles have a positive charge and are located in the nucleus?
a) elements
b) electrons
c) neutrons
d) protons

The nucleus of an atom is though to contain:
a) protons and neutrons
b) electrons
c) legos
d) molecules

How many atoms are present in the molecule for salt, NaCl?
a) 4
b) 3
c) 2
d) 5

Which of the following is NOT a group within the periodic table of elements?
a) water
b) alkali metals
c) halogens
d) noble gasses

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