Phys Sci Review 2 Question Preview (ID: 14903)
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Sugar dissolved in water is an example of a
a) element
b) substance
c) solution
d) compound
Heat is given off in a _______________ reaction
a) endothermic
b) substantial
c) exothermic
d) chemical
The rate of speed over time with direction is
a) speed
b) volume
c) density
d) velocity
When friction occurs between two objects, what particle is transferred?
a) proton
b) proton & neutron
c) electron
d) neutron
The atomic mass number gives the number of
a) electrons
b) neutrons
c) protons & neutrons
d) protons
In outer space, a person\'s _____________ will change, but _____________ will stay the same.
a) weight, mass
b) mass, height
c) weight, temperature
d) mass, weight
H20 is made up of
a) 1 Hydrogen atom and 2 oxygen atoms
b) 2 hydrogen atoms
c) 2 hydrogen atoms and 1 oxygen atoms
d) 2 hydrogen atoms and 2 oxygen atoms
Stirring water as sugar is added does what
a) speeds up the rate of dissolving
b) cools down the water
c) heats up the water dramatically
d) slows down the rate of dissolving
Besides stirring, what else can speed up the dissolving of a solid?
a) colder temperature
b) bigger container
c) adding color
d) warmer temperature
A substance made up of at least 2 elements that are chemically combined is called a
a) element
b) mixture
c) compound
d) gravity
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