Properties of Matter and Mystery Powders

Which of the following sensory observations are we allowed to make in the lab?

• taste, touch, smell

• touch, smell, look

• taste, hear, touch

• touch, look, taste

What is the indicator that we used to identify baking soda?

• vinegar

• iodine

• ph strips

• microscope

How did the baking soda react with the indicator?

• it turned black

• it bubbled and fizzed

• it turned purple

• there was no reaction

Physical properties can be observed or measured without changing a substance's

• size

• appearance

• composition

• mass

What is another term for a characteristic or quality?

• matter

• solid

• property

• hardness

_______________ properties can be difficult to observe.

• physical

• chemical

• color

• solubility

If a material does not allow any electrical energy to pass through it, the material is

• higher electrical conductor

• lower electrical conductor

• not an electrical conductor

• a soluble conductor

___________ refers to how well a substance can be dissolved in water.

• conductivity

• reflectivity

• solubility

• hardness

What is the best way to identify salt and sugar?

• taste it

• make cookies

• use microscopes

• iodine

Why are we required to wear safety goggles in the lab when we are doing an experiment?

(a)