TEST 1

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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


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