Chemistry
Write the chemical equation for the reaction: Hydrogen gas reacts with oxygen gas to form water. Include state symbols.
What is 2H2 (g) + O2 (g) → H2O (l)
This characteristic of life involves organisms responding to changes in their environment.
What is responsiveness (or reaction to stimuli)?
In this type of wave, particles move parallel to the direction the wave travels.
What is a longitudinal wave?
What is the chemical formula for calcium chloride?
What is CaCl2 (s)
This organelle is known as the “powerhouse of the cell” because it produces energy in the form of ATP.
What is the mitochondrion?
The angle of incidence is always equal to this angle in reflection.
What is the angle of reflection?
Is sodium chloride (NaCl) an ionic or covalent compound?
What is ionic?
Prokaryotic cells lack this structure that eukaryotic cells have to protect and organize their DNA.
What is a nucleus?
Total internal reflection occurs when light travels from a material with this property into one with a lower refractive index.
What is a higher refractive index?
Describe how an ionic bond forms in detail.
What is ionic compounds involve the transfer of electrons to form bonds, while covalent compounds involve the sharing of electrons?
Osmosis specifically refers to the movement of this substance across a semi-permeable membrane.
What is water?
This type of electromagnetic wave has the shortest wavelength and the highest energy.
What are gamma rays?
Balance the equation:
C₃H₈ + O₂ → CO₂ + H₂O
What is C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
If the eyepiece lens of a microscope has a magnification of 10x and the objective lens is 40x, what is the total magnification?
What is 400x?
If the frequency of an ultrasound wave is 5 MHz (5,000,000 Hz) and the speed of sound in the medium is 1,500 m/s, how long does it take for the ultrasound wave to travel 3 meters?
What is 0.002 seconds?