pH
What is the pH value for a neutral solution?
7
What is the amount of [H+] with a pH of 9.27?
5.37 x 10^-10 M
What is the force that pulls objects toward Earth?
gravity
What galaxy do we live in?
Milky Way Galaxy
What unit do scientists use to measure distances between stars?
light years or parsecs
What is the pH range for acids?
0-6
What is the amount of [H+] with a pH of 2.57?
2.69 x 10^-3 M
What organelle is known as the “powerhouse of the cell”?
mitochondria
What is the name of our star?
the sun
What is a large cloud of gas and dust where stars are born?
a nebula
What is the pH range for bases/alkalines?
8-14
What is the amount of [H+] with a pH of 5.11?
7.76 x 10^-6 M
What is the smallest unit of life?
a cell
The Sun is mostly made of which two elements?
hydrogen & helium
What is the process that powers stars and makes them shine?
nuclear fusion
What is the range for a strong acid?
0-3.5
What is the amount of [H+] with a pH of 12.44?
3.63 x 10^-13 M
What gas do plants release during photosynthesis?
oxygen
What are the two types of telescopes (based on lenses/mirrors)?
refracting and reflecting telescopes
What tool breaks light into different wavelengths to study elements in stars?
spectograph
what is the range for a strong base?
11.5-14
What is the amount of [H+] with a pH of 14.64?
2.29 x 10^-15 M
What part of an atom contains protons and neutrons?
nucleus
What color are the hottest stars?
blue or blue white
What is the life-cycle end of a massive star called?
supernova > neutron star > black hole