Chemistry Final

What is the mass of the Chlorine gas?

2NaCl + F2 ➜ 2NaF + Cl2

5.4g + 3.2g = 4.9g + ____g

Mathematical Equivalence

ON

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the equation for burning magnesium (2Mg + O2 -> 2MgO) what are the products? (a)  

• 2Mg
• O2
• 2Mg + O2
• 2MgO

Tags

NGSS.MS-PS1-5

In what state of matter are the atoms moving the slowest? (a)  

• Solid
• Liquid
• Gas
• Plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How does adding heat affect liquid water?

• it becomes a solid

• its molecules move faster

• new substances form

• a color change is produced

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the symbol for Hydrogen? (a)  

• Hy
• He
• H
• N

What is a positivly charge atom called? (a)  

• cation
• anion

What is a negatively charged atom called? (a)  

• Anion
• Cation
• Ion

Tags

NGSS.MS-PS2-3

What is a valence electron?

• an electron that is found in the outermost shell of an atom.

• an electron found in the innermost shell of an atom.

• an electron found in the middle shell.

Tags

NGSS.MS-PS1-1

What are the reactants in the chemical equation pictured?

• CH₄ and CO₂

• CH₄ and O₂

• CO₂ and H₂O

• O₂ and H₂O

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is a coefficient?

• The small number on the right of the chemical symbol.
• The large number to the left of a formula.

Tags

NGSS.MS-PS1-5