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- 1. Multiple ChoiceA mixture that appears to be evenly mixed throughout:an atoma compounda homogeneous mixturea heterogeneous mixture
- 2. Multiple Choice
A pure substance...is an element or a compoundis an element or a mixtureis a compound or a mixtureis a mixture - 3. Multiple Choice1 A substance made up of two or more chemically combinedelements is —an elementmixturecompoundsolution
- 4. Multiple ChoiceTwo or more physically combined substances form —a compoudan acidan elementa mixture
- 5. Multiple ChoiceA substance made of only one type of atom is called —an elementa mixturea compounda salt
- 6. Multiple ChoiceWhich of these substances is an example of a solution?milksweet teamercuryconcrete
- 7. Multiple ChoiceWhich of the following is a way in which elements and compounds are similar?Elements and compounds are pure substances.Elements and compounds are both made up of different kinds of atoms.Elements and compounds can both be broken down by physical means.Elements and compounds are listed on the periodic table.
- 8. Multiple ChoiceWhat is an example of an element?OxygenPure waterAirTable salt
- 9. Multiple ChoicePizzaElementCompoundHeterogenous MixtureSolution
- 10. Multiple ChoiceSalt WaterElementCompoundHeterogeneous MixtureSolution
- 11. Multiple ChoiceWhen elements form mixtures, the elements keep their original properties.TrueFalse
- 12. Multiple Choice
Which statement identifies why oxygen is classified as a pure substance and air is classified as a mixture?
Oxygen is more reactive than air.
Oxygen has a higher density than air.
Oxygen goes under a phase change, whereas air is always a gas.
Oxygen contains only one substance, but air contains several substances.
- 13. Multiple Choice
Water is a __________
Pure substance
Mixture
- 14. Multiple Choice
Water is a(n)
Element
Compound
- 15. Multiple Choice
Saltwater and sand can be separated with a _________
Magnet
Filter
- 16. Multiple Choice
Saltwater is a ____________ mixture
Homogenous
Heterogeneous
- 17. Multiple Choice
A(n) ____________ is a substance that is made up of a single kind of atom
Mixture
Compound
Element
Molecule
- 18. Multiple Choice
Elements and compounds are two types of _____________
Mixtures
Pure substances
Liquids
Acids
- 19. Multiple Choice
The compound ammonia has a pH value above 7. Which class of compounds does ammonia belong to?
Acids
Bases/Alkalis
Solutions
Colloids
- 20. Multiple Choice
What type of mixture is this salad dressing?
Heterogeneous
Homogeneous
- 21. Multiple Choice
Can a mixture be made up of only elements and no compounds?
Yes
No
- 22. Multiple Choice
Atoms combine in different ways to make up the substances you encounter every day.
True
False
- 23. Multiple Choice
Saltwater can be separated into salt and water.
True
False
- 24. Multiple Choice
A mixture of soil has the same chemical composition throughout.
True
False
- 25. Multiple Choice
What kind of mixture is a colloid?
A homogeneous mixture where one substance is dissolved into another
A substance made up of different atoms joined by a chemical bond
A heterogeneous mixture where the particles are small and do not settle quickly
The smallest unit of matter
- 26. Multiple Choice
Sodium hydroxide is a compound found in drain cleaner and has a pH of 13. Which phrase best describes Sodium Hydroxide?
Highly basic
Highly acidic
Slightly acidic
Slightly basic
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