What is it?
Part of an atom with a negative charge
a. atom
b. electron
c. neutron
d. nucleus
e. proton
b. electron
A way of organizing elements according to their properties
a. atomic number
b. chemical symbol
c. groups
d. periodic table
e. periods
d. periodic table
Good conductors of heat and electricity
a. ductile
b. metalloids
c. metals
d. noble gases
e. nonmetals
c. metals
Prevents or slows a chemical reaction
a. catalyst
b. endothermic
c. exothermic
d. inhibitor
d. inhibitor
One element replaces another in a compound
a. Decomposition
b. Double displacement
c. Single displacement
d. Synthesis
c. Single displacement
Part of an atom with a neutral or no charge
a. atom
b. electron
c. neutron
d. nucleus
e. proton
c. neutron
Number of protons
a. atomic number
b. chemical symbol
c. groups
d. periodic table
e. periods
a. atomic number
Gases or brittle solids at room temperature
a. ductile
b. metalloids
c. metals
d. noble gases
e. nonmetals
e. nonmetals
Chemical reaction where energy is released as heat
a. catalyst
b. endothermic
c. exothermic
d. inhibitor
c. exothermic
One compound swaps with a positive ion of another compound
a. Decomposition
b. Double displacement
c. Single displacement
d. Synthesis
b. Double displacement
Part of an atom with a positive charge
a. atom
b. electron
c. neutron
d. nucleus
e. proton
e. proton
Al, Cu, He, H, or O
a. atomic number
b. chemical symbol
c. groups
d. periodic table
e. periods
b. chemical symbol
Elements that are stable because their outer energy level is filled
a. ductile
b. metalloids
c. metals
d. noble gases
e. nonmetals
d. noble gases
Chemical reaction where energy is absorbed, so it feels cold
a. catalyst
b. endothermic
c. exothermic
d. inhibitor
b. endothermic
One substance breaks down into two or more simpler substances
a. Decomposition
b. Double displacement
c. Single displacement
d. Synthesis
a. Decomposition
Center of an atom made up of protons and neutrons
a. atom
b. electron
c. neutron
d. nucleus
e. proton
d. nucleus
Horizontal rows ordered by atomic number
a. atomic number
b. chemical symbol
c. groups
d. periodic table
e. periods
e. periods
Elements that have properties of both metals and nonmetals
a. ductile
b. metalloids
c. metals
d. noble gases
e. nonmetals
b. metalloids
Speeds up a chemical reaction without being changed itself
a. catalyst
b. endothermic
c. exothermic
d. inhibitor
a. catalyst
Two or more substances combine to form a new substance
a. Decomposition
b. Double displacement
c. Single displacement
d. Synthesis
d. Synthesis
Smallest piece of matter that has the properties of the element
a. atom
b. electron
c. neutron
d. nucleus
e. proton
a. atom
Vertical columns with similar properties
a. atomic number
b. chemical symbol
c. groups
d. periodic table
e. periods
c. groups
Can be made into wire
a. ductile
b. metalloids
c. metals
d. noble gases
e. nonmetals
a. ductile
Matter and energy _______________ __________ in a chemical reaction but nothing is lost. (2 word answer)
change form
In a chemical reaction, how much matter or energy is lost?
none