PS2.B - Types of Interactions

Attraction and __________________ between electric charges at the atomic scale explain how matter changes.

• repulsion

• addition

• gravitation

• construction

How electric charges interact explains how matter is transformed. This includes the structure and _________ of the matter.

• function

• masses

• volumes

• properties

Interactions between electric charges in atoms explains the contact ____________ between material objects.

• materials

• forces

• attractions

• repulsions

Which of these is NOT an example of properties based on patterns of electrons?

• reactivity of metals

• types of bonds formed

• reactions with oxygen

• melting point

___________ is a good example of a bulk property of matter.

• Melting point

• bonding ability

• reactivity of metals

• reactions with oxygen

In which of these scenarios is molecular-level structure NOT important in designing materials?

• Designers need an understanding of periodic trends.

• Flexible materials need to be made of durable long chains of molecules.

• chemicals in medicines need to be attracted to certain receptors

• Metals are used to conduct electricity.

Newton's law of universal gravitation provide a mathematical model to describe and predict the effects of gravitational ____________ between distant objects.

• speed

• forces

• pressure

• mass

_______________ law provides a mathematical model to describe and predict the effects of electrostatic forces between distant objects.

• Coulomb's

• Newton's 1st

• Newton's 3rd

• Galileo's

Forces at a distance are explained by different types of _________________ (gravitational, electric, magnetic).

• forces

• masses

• objects

• fields

_______________, or electric currents cause magnetic fields.

• Stars

• Fields

• Magnets

• Forces