Biology 1.1
The variable that is changed or controlled by the researcher is
independent variable
What is made up of atoms?
Protons, neutrons, and electrons
what is the range of the pH scale
1-14
the tendency of water to stick to other substances
adhesion
How does the mass of a proton compare to other pieces of atoms?
it is the largest
what is biology
the study of living things
How can the number of protons and neutrons be changed?
chemical reactions
what do acidic solutions have high concentrations of?
Hydrogen ions
tightness across the surface of water that is caused by polar molecules pulling on each other
surface tension
What is the charge of a proton?
+1
what is the goal of science
to find out as much as we can
Where are protons found?
in any element
strong acids on the pH scale
1-7
Bonds that form between water molecules are called
hydrogen bonds
Where are neutrons found?
nucleus
what is a scientific theory
a well-supported explanation for natural phenomena
What is the name of the location where protons are found?
strong bases on the pH scale?
7-14
What is a curved surface in a graduated cylinder called
meniscus
What charge does a neutron have?
0
The variable that is changed because of what happens around it
dependent variable
What is the number of protons called?
atomic number
what is a solution called that has more OH-ions H+ions
basic
amount of heat needed to increase the temperature of 1 kg of a substance by 1°C
specific heat
What is the charge of an electron?
-1