Chemistry, 22.07.2019 01:00 kelchalyssa
How are elements arranged in the periodic table? a. by their properties b. alphabetically c. by how much they are worth d. in the order they were discovered 2. (10 pt) which is the correct symbol for the element silicon? a. si b. s c. si d. sil 3. (10 pt) all atoms of an element are . a. flammable b. visible under a microscope c. alike d. different 4. (10 pt) elements that are usually shiny and good conductors of heat and electricity are known as a. gases b. metals c. solids d. nonmetals 5. (10 pt) the most recent model of an atom is the a. bohr model b. einstein model c. nucleus model d. electron cloud model 6. (10 pt) elements that are usually dull, brittle, and do not conduct electricity are known as a. gases b. metals c. solids d. nonmetals 7. (10 pt) elements join together to form a. compounds b. ions c. protons d. atomic masses 8. (10 pt) which picture best shows an atom? a. b. c. d. 9. (10 pt) in order for a chemical reaction to take place, a certain amount of must be present. a. heat b. friction c. chemicals d. energy 10. (10 pt) enzymes are in the body that speed up chemical reactions. a. catalysts b. cells c. concentrations d. chloroplasts
Answers: 1
Chemistry, 21.06.2019 22:40
How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?
Answers: 3
Chemistry, 22.06.2019 02:30
Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1
Answers: 1
Chemistry, 22.06.2019 06:00
When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?
Answers: 3
Chemistry, 22.06.2019 10:20
In a reaction equation, where are the products located? a.) above the arrow b.) to the right of the arrow c.) to the left of the arrow d.) below the arrow
Answers: 2
How are elements arranged in the periodic table? a. by their properties b. alphabetically c. by how...
Mathematics, 20.09.2020 16:01
Mathematics, 20.09.2020 16:01
Business, 20.09.2020 16:01
English, 20.09.2020 16:01
Mathematics, 20.09.2020 16:01
Spanish, 20.09.2020 16:01
English, 20.09.2020 16:01
Chemistry, 20.09.2020 16:01
Health, 20.09.2020 16:01