Acids and Bases
What is the pH range of acids?
Less than 7
What does each box on the periodic table represent?
An element
What state of matter has a definite shape and volume?
Solid
What is formed when two or more substances react chemically?
A new substance
What are the three main parts of an atom?
Proton, neutron, and electron
What is the pH range of bases?
Greater than 7
What do we call the columns on the periodic table?
Groups or families
What gas do humans need to breathe to stay alive?
Oxygen
What are the substances you start with in a chemical reaction called?
Reactants
Where are protons and neutrons located?
In the nucleus
What do acids taste like?
Sour
What element has the symbol O?
Oxygen
What is the chemical formula for water?
H₂O
What is a sign that a chemical reaction has happened?
Color change, gas bubbles, or temperature change
What charge does an electron have?
Negative
What color does litmus paper turn in a base?
Blue
Who is considered the “father” of the periodic table?
Dmitri Mendeleev
What tool is used to measure temperature in science labs?
Thermometer
Is rusting a chemical or physical change?
Chemical change
What part of the atom moves around the nucleus?
Electrons
Which substance is a common base used in soap?
Sodium hydroxide
Are metals found on the left or right side of the periodic table?
Left side
What is the name of the tiny particles that make up all matter?
Atoms
What do we call a chemical reaction that releases heat?
Exothermic reaction
What charge does a neutron have?
No charge (neutral)