10 questions
A small particle that is the building block of matter is a(n)
proton
nucleus
atom
electron
What is a substance?
A matter with a composition that is always the same.
Anything that has mass.
Matter that can vary.
Something that is uncut.
A molecule is defined as
things that have no mass or matter.
two or more atoms that are held together by chemical bonds and act as a unit.
an arrangement of particles that is the same throughout the mixture.
anything that has mass and takes up space.
Which of the following describes the relationship between atoms, elements, and compounds?
An element is composed of two or three kinds of atoms.
A compound is composed of one element.
One element is composed of the same atoms.
An element is composed of just one kind of atom. A compound is composed of more than one element, each of which is a composed of a different type of atom.
All matter consists of particles called________________.
units
atoms
cubes
pints
Atoms consist of parts called protons, neutrons, and___________________.
electrons
haptons
neptons
wontons
Each proton has a ______________ electrical charge.
positive
negative
neutral
shocking
Each electron has a ________________ electrical charge.
positive
neutral
negative
shocking
Each neutron has an electrically _________________ charge.
positive
negative
neutral
shocking
The nucleus of an atom contains protons and _________________.
electrons
haptons
neutrons
wontons