Matter Around us

Which of the following is the correct formula for finding density?

• $mass=volume\times density$

• $density=\frac{mass}{volume}$
  

• $volume=\frac{mass}{density}$
  

Which of the following is the correct equation for finding mass?

• $mass=density\times volume$
  

• $mass=\frac{volume}{density}$
  

Which of the following is the correct formula/equation to find volume?

• $e=mc^2$

• $\pi r^2$

• $volume=\frac{mass}{density}$
  

Oxygen is _____ with one kind of atom. Oxygen combines with iron from the air to form rust (iron oxide). Rust contains two types of atoms, which means it is ________? (Choose the pair of words to fill in the blanks)

• an element, a compound

• a compound, a mixture

• a mixture, an element

Tags

NGSS.MS-PS1-1

A steel cube weighs 80 grams and the density is 8 g/cm³, what is the volume of the cube?  $volume=\frac{mass}{density}$  

(a)  

A funnel, a container, and filter papers are used as a filtration kit. Which of the following can be separated using filtration?

• Wet concrete

• chocolate milk

• Muddy water

• salt water

Which of the following describe the properties of Homogeneous Mixtures? (Select all that apply)

• It may be mistaken for

  a pure substance.

• Its components

  are visible.

• Concrete is an example

  of this kind of mixture.

• It can be separated

  using distillation.

Which of the following are examples of the property of Heterogeneous mixtures? (Select all that apply)

• It can be separated

  using distillation.

• Concrete is an example

  of this kind of mixture.

• It may be mistaken for

  a pure substance.

• Its components

  are visible.

Which unit is commonly used to measure density?

• g

• cm3

• cm3/g

• g/cm3

An alloy that is uniform in appearance and made up of 2 types of metals is know as?

• a compound

• a heterogeneous mixture

• a substance

• a homogeneous mixture