Chemical Reactions unit check for understanding

Which of the following is an example of a chemical property of matter?

• The ability to rust

• The mass of a rock

• The length of a pencil

• The temperature of water

Why are properties important in science?

• They help describe or identify a substance

• They make substances look more interesting

• They change the color of substances

• They increase the weight of substances

Tags

NGSS.MS-PS1-2

Which property is being demonstrated by the burning substance in the image?

• Chemical property

• Magnetic property

• Electrical property

• Physical property only

Tags

NGSS.MS-PS1-2

What is a physical property?

• A characteristic that can be observed or measured without changing the substance

• A characteristic that changes the substance into something new

• A process that creates energy

• A reaction that produces light

Which of the following is NOT an example of a physical property?

• Burning

• Mass

• Texture

• Shape

Which of the following best describes when a chemical property can be observed?

• When atoms rearrange during a chemical change

• When the substance is heated

• When the substance is dissolved in water

• When the substance is broken into pieces

Tags

NGSS.MS-PS1-2

Why are fireworks a good example to show a chemical property?

• Because fireworks involve atoms rearranging during a chemical change

• Because fireworks are colorful

• Because fireworks are loud

• Because fireworks are made of paper

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the smallest particle of an element, made of electrons, protons, and neutrons?

• Atom

• Molecule

• Compound

• Element

Tags

NGSS.MS-PS1-1

Which of the following best describes a molecule?

• The simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically

• The smallest particle of an element

• A new substance with unique chemical and physical properties

• A single proton or neutron

Tags

NGSS.MS-PS1-1

What is a compound?

• A new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a chemical reaction

• The smallest particle of an element

• A single atom

• A mixture of substances that are not chemically bonded

Tags

NGSS.MS-PS1-1