Unit 1: Review Game

Heat & Temp. Calculations/SF/Scientific Notation States & Classification of Matter Properties & Changes Scientific Method/Measurements 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50

What is the definition of heat? Transfer of energy between two objects at different temperatures. Heat & Temp. 10

What is the name of the coldest temperature that can be reached? Absolute zero. Heat & Temp 20

H2O because it has the highest temperature The gases below have the following temperatures: 125°C CO2, 132°C O2, 190°C H2O. Which gas has the greatest kinetic energy? Why? H2O because it has the highest temperature Heat and Temp 30

Does the temperature change while a substance melts? Explain! No- the energy is being used to change state rather than increase the temp. Heat & Temp 40

Correctly label each number on the heating curve below. 7 6 5 Word bank: boiling, solid, gas, melting, most kinetic energy, liquid, least kinetic energy 4 3 2 1 Heat & Temp 50

How many sig figs are in the following number: 0.0095050 Calculations/SF/Sci.Not. 10

Write the following number in scientific notation: 75,000. 7.5000 x 104 Calculations/SF/Sci.Not. 20

A piece of iron has a volume of 49. 0cm3. If the density is 7 A piece of iron has a volume of 49.0cm3. If the density is 7.87g/cm3, what is the mass? Watch sf and units! 386g Calculations/SF/Sci.Not. 30

Perform the following calculation. Watch sig figs! (818 + 50) / (6.029 x 0.04) 4,000 Calculations/SF/Sci.Not. 40

A piece of silver is 20. 3g, and absorbs 506J of energy as heat A piece of silver is 20.3g, and absorbs 506J of energy as heat. What is the change in temperature of the silver? The specific heat of silver is 0.240J/g°C. ΔT = 104°C Calculations/SF/Sci.Not. 50

Identify the two states of matter shown in the physical change below: gas liquid States & Classification 10

How would you classify orange juice with pulp? Heterogeneous mixture States & Classification 20

Name two characteristics of solids on the particle level. Particles wiggle/vibrate in place Organized Tightly packed together States & Classification 30

Name one of the two pure substances and give an example. elements or compounds States & Classification 40

Name a difference AND a similarity between compounds and mixtures. Differences: 1. Mixtures- physically combined, compounds- chemically combined. 2. Mixtures- amounts can vary, compounds- definite composition. 3. Mixtures do reflect properties of components, compounds do not. Similarities: All made of matter; all made of elements States & Classification 50

A change in which the identity changes. chemical change Properties & Changes 10

A quality or characteristic that can be observed without changing the identity of the substance. physical property. Properties & Changes 20

Leaves changing color in the fall is an example of what kind of change? chemical Properties & Changes 30

Name two of the four indicators that often tell if a chemical change occurs. Change in color; formation of a gas; formation of a precipitate; change in energy Properties & Changes 40

List three properties of bread List three properties of bread. One must be chemical and one must be physical. chemical: molds easily, burns/flammable physical: white/brown, soft, solid Properties & Changes 50

What is the SI base unit used to measure temperature? Kelvin Measurements & Method 10

The mole is used as a unit for what quantity? amount of a substance Measurements & Method 20

Briefly explain why the scientific method is not a series of steps that must be performed in order. You don’t have to start at the same place, and you can always go back and repeat/refine something if needed. Measurements & Method 30

Both are well-supported and have been tested repeatedly. Name a similarity AND a difference between theories and laws. Both are well-supported and have been tested repeatedly. Theories EXPLAIN why something happens and laws DESCRIBE how something behaves. Measurements & Method 40

You want to conduct an experiment to see which brand of toothpaste whitens the best. Name the variable and three controls in this experiment. Variable: brand of toothpaste Controls: amount of toothpaste, toothbrush, water, length of time teeth are brushed, how the teeth are brushed, etc. Measurements & Method 50