Science Midterm Study Guide Review

The chemical reactivity of metals tends to __________ from left to right across the periodic table.

• Decrease
• Increase

What type of reaction is FeS + 2HCl  FeCl₂ + H₂S? 

• Single Replacement
• Double Replacement
• Decomposition
• Synthesis

H₂O is an example of a?

• Chemical Change
• Chemical Equation
• Chemical Formula
• Physical Change

Pressure can be measured in units of?

• Newtons per Square Meters
• Newtons per Square Miles
• Newtons per Cubic Meters
• Newtons per Cubic Miles

Compare amorphous and crystalline solids.

• Amorphous solids do not have distinct melting points and random atomic patterns. Crystalline solids have an atomic crystal pattern and have distinct melting points.
• Amorphous solids have distinct melting points and random atomic patterns. Crystalline solids do not have an atomic crystal pattern and doesn't have a distinct melting point.

True or False: At it decreases in temperature, the particles of a liquid are moving so slowly that they begin to form regular patterns.

• True
• False

True or False: Chemical changes occur when existing bonds break and new bonds form.

• True
• False

True or False: Orderly crystal shapes, high melting points, and electrical conductivity when dissolved in water are properties of chemical compounds.

• True
• False

What group do fluorine, chlorine, and bromine belong to?

• Halogens, Group 17
• Halogens, Group 16
• Halogens, Group 18
• Fluorine, Group 16

 List the two most common alkaline earth metals?

• Calcium and Magnesium
• Calcium and Fluorine
• Magnesium and Sodium
• Fluorine and Chlorine