Unit A Vocabulary

Substance that poses danger to health and safety Hazardous material Substance that poses danger to health and safety

Two or more substances that can be physically separated Mixture Two or more substances that can be physically separated

liquid that chemically wears away at solid materials Corrosive liquid that chemically wears away at solid materials

Can catch on fire easily Flammable Can catch on fire easily

Toxic Materials that are poisonous if inhaled, ingested, or absorbed through the skin

Chemical properties Traits of a subtance that you find by seeing how it reacts with other chemicals

Mixes with another liquid Miscible Mixes with another liquid

Physical properties Characteristics that can be observed or measured without changing the substance.

scale for acidity 0 to 14, water is 7. Strongest acid is 1 and *pH scale for acidity 0 to 14, water is 7. Strongest acid is 1 and strongest base is 14

How easily the substance lets electricity flows conductivity How easily the substance lets electricity flows

cubic centimeter cm x cm x cm = cm³

liter= 1000ml M=100cm Cm=10mm

the amount of space an object takes up volume the amount of space an object takes up

density Density = mass volume

based on math calculations quantitative based on math calculations

qualitative based on opinion

amount of atoms in a substance mass amount of atoms in a substance

force of gravity on a mass weight force of gravity on a mass

trade-offs give and take

Problem 1 A cube of material has a side that measures 2 cm. When you measure its mass, it is 10 grams. Calculate its density. Show your formulas and work.

Problem 2 Liquid A has a density of 1 g/ml, liquid B has a density of 2.3 g/ml, and liquid C has a density of 1.2 g/ml. Draw and label a diagram of how they would be layered in a container.

Problem 3 A scientist is trying to identify a rock by determining its density. Explain how he/she would calculate the rock’s density.