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Irvine Valley College BIO 1 Biology 1/Spring 2008 Quiz 3: Chemistry (Part 1) 1)Which of the following is the simplest organic molecule? water carbon dioxide methane sugar An acid is defined as a substance that, when in water releases H+ ions consumes H+ ions releases OH- ions consumes OH- ions Atoms with the same #of protons but different # of neutrons are called molecules bases ions isotopes With 4 electrons in its outer shell, silicon should bind with hydrogens 1 2 4 8 The body uses buffers to take away pain hold pH constant facilitate chemical reactions pick up oxygen Which of the following molecules involves a triple covalent bond? H20 O2 CO2 N2 Covalent bonds involve the sharing of protons
Irvine Valley College
BIO 1
Biology 1/Spring 2008
Quiz 3: Chemistry (Part 1)
1)Which of the following is the simplest organic molecule?
- water
- carbon dioxide
- methane
- sugar
- An acid is defined as a substance that, when in water
- releases H+ ions
- consumes H+ ions
- releases OH- ions
- consumes OH- ions
- Atoms with the same #of protons but different # of neutrons are called
- molecules
- bases
- ions
- isotopes
- With 4 electrons in its outer shell, silicon should bind with hydrogens
- 1
- 2
- 4
- 8
- The body uses buffers to
- take away pain
- hold pH constant
- facilitate chemical reactions
- pick up oxygen
- Which of the following molecules involves a triple covalent bond?
- H20
- O2
- CO2
- N2
- Covalent bonds involve the sharing of protons.
- True
- False
- Positively charged atoms are
- cations
- anions
- isotopes
- A and C
- All organic molecules must include at least carbon and hydrogen
- True
- False
- Polar molecules involve atoms with greatly different
- numbers of electrons
- electronegativities
- protons
- numbers of hydrogens
- Condensation synthesis reactions A.Consume water
- Produce water
- Break down organic molecules
- None of the above
- Which kind of chemical bond produces cations and anions?
- Covalent bonds
- Ionic bonds
- Hydrogen bonds
- They can all produce ions
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