1. what is the state of water at room temperature? a. solid b. liquid c. gas d. plasma 2. an ion is a charged particle that is

Question

1. what is the state of water at room temperature?
a. solid
b. liquid
c. gas
d. plasma

2. an ion is a charged particle that is formed when
a. an atom gains electrons
b. an atom loses electrons
c. both a and b
d. none of the above

3. a gas can be referred to as having:
a. indefinite volume and shape
b. definite shape and volume
c. indefinite shape and definite volume
d. indefinite volume and definite shape

4. what is the change of state from a solid directly to a gas called?
a. condensation
b. evaporation
c. both a and b
d. sublimation

5. what is matter?
a. a change of state
b. anything that has mass and takes up space
c. both a and b
d. none of the above

6. a particle with a positive charge is referred to as a
a. neutron
b. electron
c. proton
d. anion

7. an atom of sodium has 11 protons and a mass number of 23. how many neutrons does it have?
a. 11
b. 34
c. 14
d. 12

8. an atom in its lowest energy configuration is said to be in
a. rest state
b. dormant state
c. ground state
d. low state

9. the type of reaction where two of more simple compounds combine to form a more complicated one is
a. combustion reaction
b. decomposition reaction
c. synthesis reaction
d. displacement

10. according to dalton's atomic theory
a. atoms of difference elements all have the same size and mass
b. atoms of difference elements all have the same size but different mass
c. atoms of different elements differ in size and mass
d. none of the above

11. electrons closer to the nucleus are in energy than electrons further away.
a. moderately higher
b. lower
c. significantly higher
d. both a and c

12. what is the maximum electron capacity of the "s" orbital of an atom?
a. 2
b. 6
c. 10
d. 14

13. the smallest particle of an element that still retains the characteristics of that element is called
a. element
b. anion
c. cation
d. atom

14. the symbol for the element copper is
a. cu
b. c
c. ca
d. pb

15. on the periodic table, horizontal rows are known as and vertical columns are known as
a. metals, non metals
b. groups, periods
c. halogens, alkalis
d. periods, groups

16. are usually good conductors of heat and electricity, while are usually poor conductors of heat and electricity.
a. non- metals, metals
b. metals, non-metals
c. halogens, alkaline earth metals
d. noble gases, halogens

17. which of the four elements has the highest electronegativity?
a. f
b. p
c. li
d. cl

18. the compound nacl is an example of a/an
a. covalent bond
b. ionic bond
c. metallic bond
d. none of the above

19. a compound that conducts electricity when dissolved in water is knows as
a. a non-electrolyte
b. an electron
c. an insulator
d. an electrolyte

20. the mass percents for the elements present in h2so4
a. h-32.6% s-65.3% o-2.06%
b. h-2.06% s-32.6% o-65.3%
c. h-2.06% s-32.6% o-56.3%
d. h-2.00% s-40% o-58%

21. determine the empirical formula for a compound that contains 3.238 g sodium, 2.265 g sulfur, and 4.499 g oxygen.
a. na2so4
b. naso
c. nas2o2
d. nao

22. c10h8 + 12o2 > 10co2 + 4h2o

this reaction represents a

a. displacement reaction
b. synthesis reaction
c. combustion reaction
d. none of the above

23. the salt formed from the acid/ base reaction between hbr and naoh is called
a. sodium bromide
b. sodium monobromide
c. nitrogen bromide
d. sodium bromate

24. balance the following equation by choosing the correct coefficient for each compound:

h3po4 + mg(oh)2 > mg3(po4)2 + h2o

a. 1,2,3,4
b. 4,6,5,2
c. 2,3,1,6
d. 3,4,1,3

Guest · Answer

Answer 1: The correct answer is option b.Explanation: At room temperature that 25 °C water is presen...