Chemistry Week 1 Vocabulary

What is the meaning of an atom? (Check all that apply)

• The atom is a basic unit of matter and the smallest unit of an element.

• An attraction between atoms that forms chemical substances.

• A substance that is a good conductor of heat and electricity.

• It consists of a nucleus which is surrounded by a cloud of electrons.

Tags

NGSS.MS-PS1-1

What is the meaning of molecule?

• A particle in the nucleus of an atom that has no electric charge.

• Two or more atoms are joined together by a chemical bond.

• A particle of an atom that orbits the atom's nucleus and carries a negative charge

• An attraction between atoms that forms chemical substances.

Tags

NGSS.MS-PS1-1

What is the meaning of proton?

• A combination of two or more substances that are not chemically combined.

• A particle in the nucleus of an atom that has no electric charge.

• The central core of an atom containing the protons and neutrons.

• A particle within the nucleus of an atom that holds a positive charge.

What is the meaning of neutron?

• A particle in the nucleus of an atom that has no electric charge.

• A substance that is a good conductor of heat and electricity.

• A table of the chemical elements arranged by atomic number.

• A particle of an atom that orbits the atom's nucleus and carries a negative charge.

Answer explanation

What is the meaning of electron?

• A particle within the nucleus of an atom that holds a positive charge.

• A particle of an atom that orbits the atom's nucleus and carries a negative charge.

• A particle in the nucleus of an atom that has no electric charge.

• The central core of an atom containing the protons and neutrons.

Tags

NGSS.MS-PS2-3

What is the meaning of microscope?

• A piece of chemistry lab equipment that produces a flame used for lab experiments.

• A device that measures the activity of the hydrogen ion in substances.

• A table of the chemical elements arranged by atomic number.

• A device that magnifies tiny objects, or makes them look larger.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is the meaning of element? (Check all that apply)

• A pure chemical substance that is made up of one type of atom.

• An atom or molecule which has a negative or positive charge because the number of electrons does not equal the number of protons.

• The ability of a material to be stretched into a long wire.

• Each atom in an element is defined by an atomic number which is the number of protons in the nucleus.
  

What is the meaning of compound?

• A material that allows the flow of energy such as heat or electricity.

• A pure substance made up of two or more elements.

• A substance that speeds up the rate of a chemical reaction. The catalyst is not consumed in the reaction.

• An attraction between atoms that forms chemical substances.