What is the main difference between weight and mass?
Weight depends upon gravity.
100
Density is a measure of mass divided by ____________.
What is volume?
100
Which of the following is not a property of an acid?
Sour Taste
Gives Off H+ Ions
Slippery Feeling
Reacts with Metals
What is slippery feeling?
200
True or False:
The current model of the atom states that electrons travel as waves in the electron cloud that surrounds the nucleus.
What is TRUE?
200
Silver, lead, and hydrogen are examples of what type of matter?
What is an element?
200
Depends upon gravity.
What is weight?
200
This type of physical property does not depend on the amount of matter in the substance.
Observable
Intensive
Measurable
Extensive
What is intensive?
300
A subatomic particle located in the nucleus with neutrons.
What is a proton?
300
The atomic numbers __________ (increase, decrease, are random) as you move from right to left across the periodic table.
What is decrease?
300
A measure of the amount of matter in an object.
What is mass?
300
Which of the following is not an example of an extensive physical property?
Mass
Length
Size
Density
What is density?
300
It is not possible to separate _____ by physical means.
mixtures
solutions
salt water
compounds
What is a compound?
400
Cl is highly reactive. You would expect NaCl to _________________.
be similar
be different
have some of the same properties
Be different!
400
What do the numbers listed for an element on the periodic table represent? Include BOTH numbers.
The bottom number is the mass and the top number is the number of protons.
400
What is the density of water?
1g/ml
400
A solution...
has a uniform composition and is able to be separated by physical means.
has a heterogeneous composition and is able to be separated by physical means.
has a heterogeneous composition and is able to be separated by chemical means.
has a uniform composition and is only able to be separated by chemical means.
What is A?
500
When two nonmentals bond, they form a(n) __________>
Salt
ionic compound
covalent compound
element
What is a covalent compound.
500
Elements found in the same column of the periodic table as said to have ____________ properties.
similar/different
What is similar?
500
If you travel from the Earth to the moon, which of the following measurements would change?
Mass
Weight
Density
Size
What is weight?
500
A physical property is one that
cannot be observed.
can be observed by altering the identity.
can be changed without altering the identity of a substance.
must be observed through chemical means.