Science and Engineering
Tools of Inquiry
Atomic Structure/Periodic Table
Mixtures/States of Matter
Chemical Equations
100
Developing theories using evidence, explaining natural events using data.
What is science?
100
The benefit of the type of model shown below.
What is showing a pattern for determining the side lengths of a triangle?
100
Two terms that can be used to describe graphite which is made exclusively of carbon atoms.
What are element and pure substance?
100
Density, conductivity, melting point, boiling point, and appearance.
What are physical properties?
100
The following reaction forms these products:
2KOH + H2SO4 -->
A. K2SO4 + 2HNO3
B. 2K + 2H2O
C. K2SO4 + 2H2O
D. 2K2S + SO3
What is K2SO4 + 2H2O (option C)?
200
The variable in an experiment that is measured.
What is a dependent (responding) variable?
200
A triple beam balance or an electrical balance.
What are tools that could be used to measure mass?
200
This model represents hydrogen peroxide. The white spheres represent hydrogen (H) and the red spheres represent oxygen (O). The chemical formula is ________.
What is H2O2?
200
Color change, odor, light, heat, and production of gasses.
What are chemical properties?
200
The number of atoms of each element in the reactants equals the number of atoms in each element in the products.
What is the law of conservation of matter?
How a balanced equation represents the conservation of matter in a chemical reaction.
300
New technology, telescopes that can detect distant galaxies, microscopes that can see inside of cells, etc.
What are examples of how engineering affects science?
300
The property of matter that is measured by a graduated cylinder.
What is volume?
300
Water is a substance made up of the elements hydrogen and oxygen. This is the number of types of atoms that make up a particle of water.
What is two?
300
The particles in this state are closely packed together.
What are solids?
300
The chemical equation below represents a chemical reaction:
H2SO4 + 2LiOH --> Li2SO4 + 2H20.
These (products/reactants) are represented by H2O and Li2SO4.
What are the products?
400
The variable that changes in an experiment.
What is the independent variable?
400
The property of matter that is measured by using a thermometer.
What is temperature or thermal heat?
400
Lithium has three protons as shown below. How many electrons does lithium have if it is a neutral atom?
What are three electrons?
400
The mixture shown below is (homogenous/heterogenous).
What is homogeneous?
400
This relationship explains how the water can boil at room temperature.
What is lower pressure resulting in a lower boiling point.
500
The diagram below shows the box for the element krypton.
This is the chemical symbol.
What is Kr?
500
This is used to summarize large amounts of data in an organized way.
What is a data table?
500
The elements in group two have this in common.
What is they form ions with a plus 2 electric charge?
500
These two changes of state occur when a substance loses thermal energy.
What are freezing and deposition?
500
Sulfur (S) and oxygen gas (O2) undergo a chemical reaction to form sulfur trioxide (SO3). The balanced equation for this reaction is:
A. 3O2 → 2SO3 + 2S
B. 2S + 3O2 → 2SO3
C. 2SO3 → 2S + 3O2
D. 2S → 2SO3 + 3O2
What is B. 2S + 3O2 → 2SO3 ?