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Chapter 1 Review
Atoms and Matter
| Question | Answer |
|---|---|
| Substances that are not evenly mixed | Heterogeneous Mixture |
| Substances that are evenly mixed | Homogeneous Mixture |
| A small particle that is the building block of matter | Atom |
| Gravity is matter because it does not have mass and volume. True or False | False |
| Each type of atom has a different number of smaller particle. True or False | True |
| The substances in a mixture are bonded together. True or False | False |
| All atoms of an element are alike. True or False | False |
| Matter can be classified as ______ and ______ | substance and mixture |
| A substance can be classified as ______ and _____ | element and compound |
| A mixture can be classified as _____ and ______ | heterogeneous and homogeneous mixtures |
| A substance is ______ | pure |
| A mixture is _______ | impure |
| Anything that has mass and takes up space | Matter |
| The central region of an atom | nucleus |
| Nucleus contains two particles called ____ and ____ | protons and neutrons |
| the region surrounded the central area | electron cloud |
| The nucleus of an atom contains (protons/electrons) and neutrons | protons |
| The modern model of an atom is called the (electron-cloud/nucleus-orbit) model | nucleus-orbit |
| What particle in a atom has a positive charge | proton |
| What particle in an atom has no charge | neutrons |
| What particle in an atom has a negative charge | electrons |
| Where is most of the mass of an atom found | nucleus |
| That has gained or lost electrons | ion |
| A (positive/negative) ion has more protons than electrons | positive |
| Adding an (proton/electron) to a neutral atom produces a new element | proton |
| The nucleus has a (positive charge/negative charge) and the (least mass/most mass) of the atom | positive charge, most mass |