1
Precious metals include gold, copper, platinum, and what other?
What is silver?
In which state of matter are the molecules spread far apart and move at a fast pace?
What is a gas?
When a gas changes into a liquid, this is called _______________. When a liquid changes into a gas, this is called ________________.
What is condensation, evaporation?
In what state of matter are the molecules kind of close together and move at a medium pace?
What is a liquid?
What do bases measure on the pH scale?
What is 8-14?
In which state of matter are the molecules very close together and move very slow?
What is a solid?
A chemical change is a change in ____________ and usually can not be ________________.
What is molecules and reversed?
What is the measure of the strength of an acid?
What is acidity?
The three states of matter include solids, _________, and gases.
What are liquids?
Lemon juice and orange juice are examples of acids. What is one more example?
What is vinegar?
What do acids measure on the pH scale?
What is 0-6?
A physical change is a change in size, state of matter or ____________?
What is shape?
The periodic table is broken into _______, non-metals, gases, and scientist created materials.
What is metals?
What tests to see if something is an acid or a base?
What is litmus paper?
Solids, liquids, and gases are _________ coded.
What is color?
Physical changes are causes by pressure and temperature. What else causes a physical change?
What is motion?
The atomic number tells how many ____________ are inside the nucleus.
What is protons?
Some clues that a chemical change is occurring include: gas forming, _______ appearing, or a change in ________.
What is heat and color?
Metals conduct heat, are hard and shiny, and can be _________ into many different shapes.
What is melted?
What kind of taste does a base have?
What is bitter?
What is the measure of the strength of a base?
What is alkalinity?
What kind of taste does an acid have?
What is sour?
____________ give off hydroxide ions.
What is bases?
Egg whites and soaps are examples of bases. What is another example?
What is saliva?