The physical combination of two or more substances
mixture
Which from the diagram is most alkali?
paint stripper
The vertical arrangement of elements in the periodic table
Groups
Which state of matter has no definite shape and volume?
Gas
The horizontal arrangement of elements in the periodic table is called
Periods
sodium hydroxide is a strong alkali. Give a possible pH for sodium hydroxide
11 - 14
What term do we call species that do not produce offspring?
infertile
Pure water is neutral. What is the pH of a neutral solution?
7
What do we call the materials that conducts electricity?
conductors
What is the name given to a reflected sound?
echo
What is the particles that flow through conductors?
electrons
a mixture containing two different types of metal atoms
element
alloy
compound
What is the word used to describe materials that do not conduct electricity?
insulator
Which state of matter has its own shape and volume?
Solid
Based on the diagram, classify vinegar as acid, alkali or neutral.
acid
The temperature at which substances melt?
Melting point
A pure substance containing the same type of atom
compound
mixture
element
A car transfers all its chemical energy (100J) into thermal, sound, and kinetic energy only. If 70J is transferred as thermal energy 10J as sound energy, how much kinetic energy is transferred?
20J
a pure substance containing different types of atoms bonded together
element
mixture
alloy
compound
The process at which solid turns into liquid
melting