Elements, Compounds, and Mixtures Test- Study Guide
Elements, Compounds, and Mixtures Test- Study Guide
• Do you know the difference between an element and a compound?
▪ The difference between an element and a compound is that an element is a substance made of same type of atoms, whereas a compound is made of different elements in definite proportions. Examples of elements include iron, copper, hydrogen and oxygen. Examples of compounds include water (H2O) and salt (Sodium Chloride - NaCl)
o Are elements and compounds pure substances? Why?
▪ Elements and compounds are both pure substances because they cannot be split apart by physical or mechanical methods
o Do you know how compounds are formed?
▪ The reaction between atoms of different elements leads to the formation of compounds / a new substance (want to have full valence shells – think about the octet rule).
o Is there difference between a compound and a molecule?
▪ A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different elements. All compounds are molecules but not all molecules are compounds
• Do you know the difference between a physical property and chemical property?
▪ A physical property is an aspect of matter that can be observed or measured without changing it. Examples of physical properties include color and volume.
▪ A chemical property may only be observed by changing the identity of a substance.
▪ This property measures the potential for undergoing a chemical change. Examples of chemical properties include reactivity, flammability and oxidation states.
• Do you know the difference between a physical change and a chemical change?
▪ A physical change in a substance doesn't change what the substance is. In
▪ In a chemical change there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.
• Do you know the properties of sodium? Chlorine? Hydrogen? Oxygen? Sodium Chloride/table salt? Water?
• Do you know how a mixture is created?
o Is it physical or chemically combined?
▪ Physical
o Is it a pure substance?
▪ No
o How can you separate different types of mixtures?
▪ Physical Means – magnetism, hand separation, filtration, sifting, evaporation, density
o Do you know when to use filtration, evaporation, magnets, particle size, and density to separate mixtures?
▪ Filtration – solid and liquid – passing mixture through a porous material
▪ Evaporation – solid and liquid – water evaporates leaving solid behind
• Do you know how to use the Periodic Table?
How do you find the number of protons, electrons, and neutrons for various elements?
o Do you know which number is the atomic number? What does it tell you?
o Do you know which number is the atomic mass? What does it tell you?
o Do you know how to draw a Bohr model?
▪ Where do the protons go? Neutrons? Electrons?
▪ How many electrons can fit in the first energy level? All others?
• How do bonds form between atoms (ionic, covalent)
▪ Ionic - metal and non metal – transfer elections
▪ Covalent – non metal and non metal – share elections
• Counting Atoms (coefficient/ subscript)
▪ Coefficient – number of molecules
▪ Subscript – number of atoms
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- ph worksheet ohio
- curriculum paper and classroom guidelines general biology
- protein synthesis worksheet
- bsc 2010c principles of biology i
- elements compounds and mixtures test study guide
- biology semester 1 aventa learning
- ib biology websites
- cell respiration yeast lab biology junction
- rubric for online discussion boards utica college
- ib diploma biology internal assessment template
Related searches
- placement test study guide free
- pect test study guide pennsylvania
- microbiology study guide and test
- atoms elements compounds mixtures worksheet
- elements compounds and mixtures worksheet
- act test study guide free
- elements molecules and compounds worksheet
- elements compounds and mixtures test
- civics test study guide answers
- elements compounds and mixtures worksheet answers
- atoms molecules elements compounds kids
- elements compounds and mixtures answer sheet