Directions Read each cause and effect relationships.

Determine the cause.

Describe the effect.

Questions

1. Whenever electrons of an atom unite with electrons of another atom, a chemical change occurs.

What is the cause?

What kind of change occurs?

2.Water expands when it freezes. Expanded ice floats on lakes and ponds.

What causes the water to expand?

What is the effect on the expanded ice?

3.Some metals will expand when heated. Expanded metals may bend.

What causes the metal to expand?

What is the effect of the expanded metal?

4.Gases expand when heated. An expanded gas occupies more space.

What causes the gas to expand?

What is the effect of the expanded gases?

5.Give an example of a cause and effect relationship.

What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Listen base your answer to the question on the information below.propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below.c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol.what is the correct structural formula for a molecule of methanethiol