M&E Ch 2 Review

How often was the temperature taken?

• Every minute
• Every 2 minutes
• Every 30 seconds
• Every 10°C

T or F:  Evaporation occurs inside a liquid.

• True
• False

What TV show is this??

• The Middle
• Modern Family
• Friends
• The Goldberg's

An example of a chemical change is

• Water vaporizing into a gas
• Sugar dissolving
• Silver spoons tarnishing
• Carving a pumpkin

If water changes from a liquid to a solid, that's a chemical change.

• True
• False

What is the density of this object if it has a mass of 378 grams?

• 72
• 3.5
• 108
• 7.4

If all the chemicals below were mixed together, sort them from top(#1) to bottom (#6) :

• Gold, Lead, Silver, Copper, Iron, Aluminum
• Gold, Copper, Iron, Silver, Lead, Aluminum
• Copper, Aluminum, Lead, Silver, Iron, Gold
• Aluminum, Iron, Copper, Silver, Lead, Gold

If the freezing point of a substance is -28°C, then the melting point is at a higher temperature.

• True
• False

What instrument measures how fast or slow molecules move around?

• Microscope
• Thermometer
• Triple Beam Balance
• Graduated cylinder

What is considered the normal boiling point of water at sea level in °C?

• 0°C
• 37°C
• 100°C
• 21°C