MA;AK SCIENCE

What might indicate that a chemical change has occurred?

• Change in texture

• Change in color

• Change in shape

• Change in size

Which of the following is a sign of a chemical change?

• Melting ice

• Dissolving sugar in water

• Formation of bubbles

• Crushing a can

Which example shows a chemical change?

• Boiling water

• Burning wood

• Mixing sand and salt

• Freezing juice

What is a common sign of a chemical reaction?

• Temperature change

• Water evaporating

• A physical mixture forming

• Ice melting

Which observation best suggests a chemical change has occurred?

• Formation of a new substance

• Dissolving a solid in liquid

• Melting of wax

• Breaking a glass

How are you able to determine the physical properties of a substance?

• By using the senses to smell, taste, hear, feel, or see it

• By comparing it to the substances that surround it

• By determining its placement on the periodic table of elements

• By observing how it reacts with other substances

• By observing its shape and reflectivity

The maximum amount of a substance that can be dissolved by another substance is called the…….

• conductivity

• solubility

• solvent

• colloid

Anita places three cubes on a table. One cube is lead, the second is ice, and the third is balsa wood. The sides of each cube are exactly 3.5 centimeters long.

Which do all three cubes have in common?

• the same mass

• the same weight

• the same volume

• the same temperature

Fill in the blanks using the available answer choices.

A property is a characteristic that can be observed and measured………

• chemical

• physical

The ability of matter to dissolve in a liquid is called ____.

• solubility

• reflectivity

• conductivity

• magnetism