CHEMICAL REACTIONS INTRO & COMPOUNDS REVIEW SPR 24

Properties that can be identified by our five senses are ___ properties.

• chemical

• biological

• physical

• energy

Properties that can be identified by changing a substance's composition are ___ properties.

• chemical

• biological

• physical

• energy

Which of the following IS NOT a chemical property?

• toxicity

• flammability

• pH

• density

Which of the following IS NOT a physical property?

• electrical or thermal conductivity

• radioactivity

• melting and freezing points

• ductility

Changes that produce new substances are ___ changes.

• chemical

• systemic

• physical

• phase

Changes that DO NOT produce new substances are ___ changes.

• chemical

• systemic

• physical

• phase

Which of the following are chemical changes?

• dissolving dye and water

• color change

• shredding paper

• cooking food

Which of the following are physical changes?

• digesting food

• melting ice

• vaporization

• rusting

Which of the following IS NOT a sign of a chemical change?

• odor

• temperature change without adding or removing heat

• mass change

• burning

All chemical changes involve ___.

• phase changes

• chemical reactions

• mixtures