🔍 Key Concepts

• density of a substance compared to water • how easily a liquid pours or flows • terms commonly found under Physical and Chemical Properties on a Safety Data Sheet (SDS)

💭 Think About

• Which property tells you if a liquid will float on water or sink below it? • Which property is more about how thick or runny a liquid is, rather than whether it is lighter or heavier than water? • On an SDS, what term is usually listed as a ratio with water being the reference (often water = 1)?

✅ Before You Answer

• Identify the term that compares a substance to water as a reference point. • Eliminate any choices that describe how fast a liquid flows rather than whether it floats or sinks. • Check which term you have actually seen on real SDS forms under Physical data/Physical and chemical properties.