Abeka Chemistry Test 1

What are atoms that have the same number of protons but different numbers of neutrons?

• allotropes

• isotopes

• cations

• anions

The number of which type of particle identifies an atom as a given element?

• proton

• neutron

• electron

• quark

Which of the subatomic particles is not found in the nucleus of an atom?

• proton

• neutron

• electron

• quark

Tags

NGSS.HS-PS1-8

What type of chemist would most likely study alcohols, which consist of carbon, hydrogen, and oxygen?

• organic chemist

• inorganic chemist

• physical chemist

• analytical chemist

Tags

NGSS.HS-LS1-6

Which of the following is NOT an evidence that a physical change has occurred?

• chopping a piece of wood

• freezing of a liquid

• a liquid melting

• formation of gas

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is a group of two or more atoms linked together by chemical bonds?

• element

• molecule

• mixture

• phase

Tags

NGSS.HS-LS1-6

What is the relative charge of an electron?

• -2

• -1

• 0

• +1

Who developed the atomic theory of matter?

• J. J. Thomson

• Robert Milikan

• John Dalton

• Ernest Rutherford

What is a homogeneous part of a system that is in contact with but physically distinct from other parts of the system?

• compound

• phase

• solution

• mixture

What is the atomic symbol for Sulfur?

(a)