Which is an example of a chemical change?

ripping paper

chopping wood

baking a cake

stretching a rubber band

Calcium au 2. iron ca 3. nickel fe 4. copper cu 5. gold ni

How do transitional fossils fit with the theory of evolution

The density of a gas is measured at 1.653 g/L at 746 mmHg and 25.0 °C. What is its molar mass?

A rectangular field measures 6.0 m by 8.0 m. What is the area of the field in square centimeters (cm 2) ? Use the formula: Area = length * width. A: 4.8 * 10 4 cm 2 B: 4.8 * 10 5 cm 2 C: 4.8 * 10 3 cm 2

Which statement best describes the molecules in a solid? A: Molecules move completely at random and at very high speeds. B: Molecules expand to the edge of their container. C: Molecules vibrate in a fixed position and do not move around much.

At what the pressure, in atmospheres, that O2, gas at 75°C has a density of 2.00 g/L

What aspect relates to energy

What is the specific heat capacity of silver metal if 75.00 g of the metal absorbs 56.4J of heat and the temperature rises 35.0°C?

Explain chemical bonds

During an investigation, similar effervescent tablets were dropped into a beaker containing cold water and a beaker containing tap water. The table below shows an incomplete record of the investigation.