Science quiz

How many total atoms make up 2 water molecules? Name the atoms.

H20-water molecule

• There are 3 total atoms in 2 water molecules, the types are nitrogen and oxygen

• There are 2 total atoms in 2 water molecules , the types are oxygen and hydrogen

• There are 6 total atoms in 2 water molecules, the types are hydrogen and oxygen.

• There are 4 total atoms in 2 water molecules, the types are hydrogen and nitrogen

Tags

NGSS.MS-PS1-1

The ions, atoms, or molecules of this particular state of matter have very big spaces in between them, they can also move freely and fast. They also have very weak or no bonds at all. What state of matter is this?

• Solid

• Liquid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

How many valence electrons will C have

based on its position on the periodic table?

• 13

• 14

• 6

• 4

Tags

NGSS.MS-PS1-1

A solid has a mass of 100 grams and a volume of 40 cm3. What is the density?

• 2.5 g/cm3

• 2 g/cm3

• 5 g/cm3

• 5.5 g/cm3

If the elements oxygen(O) and fluorine(F) formed a bond, which type will it be?

• Ionic

• Covalent

Tags

NGSS.MS-PS1-1

Where do protons, neutrons and electrons belong?

• Protons- nucleus, neutrons-orbitals, electrons-orbitals

• Protons-orbitals, neutrons-nucleus, electrons- nucleus

• Protons-nucleus, neutrons- nucleus, electrons orbitals.

• Protons-orbitals, neutrons-orbitals, electrons- nucleus.

Tags

NGSS.MS-PS1-1

An isotope contains 16 protons, 18 electrons, and 16 neutrons. What is the identity of the isotope?

• 32S2−

• 32S2

• 34S2

• 34S2−

Tags

NGSS.MS-PS1-1

Balance the following equation. Select the answer with the correct coefficients.

__N2+__H2→__NH3

• 1 N2+3 H2→2 NH3

• 2 N2+1 H2→3 NH3

• 1 N2+3 H2→1 NH3

• 2 N2+3 H2→2 NH3

Tags

NGSS.MS-PS1-5

4Al + 3O2 → xAl2O3. Find 'x' and explain how you solved it.

• x=2, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side so you multiply until they are equal.

• x=4, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side so you multiply until they are equal.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The mass of an object is 57 grams and the volume is 23cm^3. The mass of the second object is 456 grams and the volume is 165cm^3. Which has a greater density?

• object 1

• object 2