TEST 1
What is the relative charge of an electron?
-1
Atomic symbol for silver
Ag
Atomic symbol for carbon
C
Atomic symbol for calcium
Ca
Who developed the atomic theory of matter?
John Dalton
Atomic symbol for potassium
K
Atomic symbol for magnesium
Mg
Atomic symbol for nitrogen
N
Atomic symbol for sodium
Na
Atomic symbol for sulfur
S
Which of the following is a homogeneous mixture? Apple juice, chicken noodle soup, raisin bread, table salt
apple juice
An ion that has 3 protons, 4 neutrons, and 2 electrons is an ______________.
cation
Which of the following is a chemical property? Combustible, very dense, liquid at room temperature, blue
combustible
What is evidence that chemical change has occurred?
distinct change in color formation of a gas formation of a precipitate
What subatomic particles is not found in the nucleus of an atom?
electron
What are atoms that have the same number of protons but different numbers of neutrons?
isotopes
Why would a liquid became a gas at the boiling point?
kinetic energy of the particles is great enough to overcome their attraction for each other
Which of the following quantities does not have any uncertainty? Volume of a swimming pool, width of your classroom, mass of an airplane, or length of a week.
length of a week
What is a group of two or more atoms linked together by chemical bonds?
molecule
The subatomic particle of an atom that has no electrical charge is the __________.
neutron
What type of chemist would most likely study alcohols, which consist of carbon, hydrogen, and oxygen?
organic chemist
What is a homogeneous part of a system that is in contact with but physically distinct from other parts of the system?
phase
The number of which type of particle identifies an atom as a given element?
proton
Which of the following is not a chemical change? Charcoal burning, barbed wire rusting , sugar dissolving in coffee, eggs cooking.
sugar dissolving in coffee
A measure of the force of gravity upon an object is ___________
weight