Atomic Structure
What is the smallest unit of matter?
What is, an atom
What are the three properties of water that result from water's hydrogen bonds?
What is, Cohesion, adhesion, heat capacity
Water is what on the pH scale. (provide both number, and whether its an acid or base or neutral)
What is, 7 and neutral
What does biology mean?
What is, The study of life
What is the chemical formula of water.
What is, H2O
What is the positively charged subatomic particle?
What is, proton
Which property of water is responsible for water sticking to the sides of a glass cylinder?
What is, adhesion
What range of pH is considered acidic?
What is, Less than 7
An educated guess that proposes a possible explanation as to why something happens
What is, a hypothesis
How many valence electrons does carbon have?
What is, 4
Silver has an atomic number of 47, and an atomic mass of 108. How many electrons and neutrons does it have?
What is,
47 electrons
61 neutrons
What property causes a pot of water to take a long time to boil?
What is, water has a high heat capacity
What pH range is considered basic (alkaline)?
What is, greater than 7
The variable that is being changed by whoever is performing an experiment
What is, the independent variable
How many valance electrons does helium have
What is, 2
In order to calculate the atomic mass you need to...
What is, Add protons and neutrons
This is the property that helped the water form a dome on the penny.
What is, Cohesion
What is a weak acid or base that serves to offset other acids and bases to prevent spikes or sudden changes in pH?
What is, buffer
In an experiment, this serves as the baseline, or something to compare the results to.
What is, the control
Which property of water is caused by the difference due to the unequal sharing of electrons in the covalent bond?
What is, polarity
Water has the ability to form these kinds of bonds due to its polarity?
What is, a hydrogen bond
Oxygen and two hydrogen combine to form H2O. Which element is more electronegative, and what kind of covalent bond do they form that results in a partial charge. (think of how they share the electrons)
What is, Oxygen is more electronegative, and it forms a polar molecule
pH stands for
What is, potential hydrogen
Provide all of the characteristics of life
What is :
Grow and develop Maintain Homeostasis
Require energy Contain DNA
Reproduce Respond to Stimulus
Made of cells Evolve