Science Review - Matter

What is the small particle that is the building block of matter called?

• atom

• molecule

• isotope

• electron

What do we call a mixture in which the substances

are not evenly mixed?

• heterogeneous matter

• homogenous matter

• proton

• solution

Two or more atoms that are held together by chemical bonds and act as a unit are called....?

• Element

• Electron

• Mixture

• Molecule

What so we call a substance made of only one kind of atom?

• nucleus

• element

• proton

• electron

What do we call a mixture in which two or more substances are evenly mixed, but not bonded together?

• homogeneous matter

• heterogeneous matter

• electrons

• molecules

What do we call an atom that has a charge because it has gained or lost electrons?

• Ion

• Isotope

• electron

• nucleus

What is it called when one of two or more atoms of an element have the same number of protons, but a different number of neutrons?

• Isotope

• electron

• proton

• ion

What do we call we the negatively charged particle that occupies the space in an atom outside the nucleus?

• proton

• electron

• atom

• element

What is the region at the center of an atom that contains most of the mass of the atom called?

• nucleus

• atom

• molecule

• proton

What is the positively charged particle in the nucleus of an atom called?

• Electron

• Ion

• Isotope

• Proton